No, it doesn't. I think that what you call "harmonization" is actually you trying to force the verses to mean what you want them to.
I noticed also that you tend to read into verses assumptions not stated therein, which is different than harmonizing them.
Believe me, I hope I've missed something germane regarding the second death, and that I'm wrong, as I don't like it any more than you do, but as far as I can see, unfortunately, these verses seem pretty conclusive - that if someone doesn't become saved by God during their lifetime, they will be cast into the lake of fire. Read them closely
[Rev 20:6 KJV]
6 Blessed and holy [is] he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.
[Rev 20:14-15 KJV]
14 And death and hell were cast into the lake of fire. This is the second death.
15 And whosoever was not found written in the book of life was cast into the lake of fire.
God hates the unsaved because they are not justified by Christ, and therefore, their sin remains. Until saved, all are guilty of sin worthy of death.
[Rom 9:11 KJV]
11 (For [the children] being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth
[Rom 9:13-15 KJV]
13 As it is written, Jacob have I loved, but Esau have I hated.
14 What shall we say then? [Is there] unrighteousness with God? God forbid.
15 For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
But the question is: who is it that will truly believe and why will they believe? Answer: true belief comes only as a gift from God; it is not by man.
[Jhn 6:29 KJV]
29 Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
[1Pe 1:20-21 KJV]
20 Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,
21 Who by him do believe in God, that raised him up from the dead, and gave him glory; that your faith and hope might be in God.
[Phl 1:29 KJV]
29 For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake;
Old Covenant was based upon our works. Our choice was one of those required works. However, we are under the New Covenant
now. Our works, including our choices, are no longer required, nor permitted. Instead, God did it all on our behalf. In the following verses that describe the New Covenant, observe the "I will", the "will I". By that, we can know there is nothing left that man must do to effectuate the new covenant for ourselves. For those so chosen to be under the New Covenant, the Old Covenant and its stipulations are neither in effect nor applicable.
[Heb 8:9-12 KJV]
9 Not according to the covenant that I made with their fathers in the day when I took them by the hand to lead them out of the land of Egypt; because they continued not in my covenant, and I regarded them not, saith the Lord.
10 For this [is] the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, ands write them in their hearts: and I will be to them a God, and they shall be to me a people:
11 And they shall not teach every man his neighbour, and every man his brother, saying, Know the Lord: for all shall know me, from the least to the greatest.
12 For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more.
It is speaking not about individuals but about the Jewish religious infrastructure. God is telling the Jews that salvation would no
longer be through their religion - that their religious house would be left barren regarding salvation. Notice individuals are not in view, but Jerusalem is, the old holy city, and seat of the Jewish religion.
You missed significant verses that you should have used to harmonize it. Those verses define who the "all" actually are.
[Jhn 6:37 KJV] 37 All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.
[Jhn 17:9 KJV] 9 I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine.
Doesn't that verse (and the one prior to it), actually support my position, not yours?
[Rom 11:6-7 KJV]
6 And if by grace, then [is it] no more of works: otherwise grace is no more grace. But if [it be] of works, then is it no more grace: otherwise work is no more work.
7 What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded
Okay, at this point, I'm not even following you. These verses support election and the New Covenant, not the Old Covenant. They speak only of the elect being justified by God apart from anything they may do - whether good or bad. Not everyone has been chosen to be holy and without blame from before the foundation of the world. Those elected, God chose, they did not choose Him, nor themselves.
[Eph 1:4 KJV] 4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
Actually, I think I'm getting close to the maximum allowable for a post, so I will stop now and probably address
the remainder sometime in the future. Suffice it to say though, that pertaining to salvation, God does it all. If He didn't, then no one would/could become saved. Salvation is bestowed on those not deserving of it who were none the less chosen by an exceedingly merciful and gracious God through Jesus Christ.