I don't see any conflict with scriptures. And that is what scripture says that God wants all men to come to repentance. Whosoever calls upon him and believes in him shall be saved. No conflict with any scripture that I can see of. Like you said we have to harmonize scripture. We do that by taking the scripture together and in context. Rightly dividing the word of truth. I can do that without having to change any of the words or context of scripture around, and I see no conflict in any scripture.
God wants all men to be saved and through the Word he has already told us how we can be saved. If anyone accepts what he says and accepts him when he calls then they will be saved, if they don't then they wont. I think it is pretty plain and simple.
There is no way, without changing word meanings around or taking scripture out of context, to say it any other way.