Hello TheWaytoGo!
The verse does not support your claim of the verse referring to the unrighteous.
"Look, I come like a thief! Blessed is the one who stays awake and remains clothed, so as not to go naked and be shamefully exposed."
First of all, The seals, trumpets and bowl judgements, as well as the plagues of the two witnesses, is what makes up the tribulation/great tribulation period. The verse above is inserted by the Lord at the pouring out of the 6th bowl, which would take place before the 7th bowl is poured out and which completes God's wrath. So, I don't know why you would claim that it is written after God's wrath, when there is one bowl left to be poured out.
And second, in regards to your claim 'He's not talking to believers, but the unrighteous,' the verse says 'blessed is the one who [stays awake]' which would be a warning to those who are already awake and alert. For you can't stay awake if you were never awake in the first place, which would be the case with unbelievers. The warning for them to stay awake and remaining clothed, would be in reference to believers to continue in faith, being watchful and alert, while the unrighteous would not be in that state to begin with.
In addition, how could the verse be referring to the unrighteous (unbelievers), when they would not be reading the word of God in order to heed the warning? Only those who would be familiar with God's word would understand the warning. Therefore, the warning is to believers in Christ, specifically, the saints during the great tribulation.