It's not up to me OR you OR the Roman Catholic church to see into a person's heart - only God can do that. It is why being baptized, going to a "church", being "good", etc. is not how one is saved/born again. We are saved by grace through faith and that NOT of ourselves, not of our works, lest anyone should boast.
BTW... Hitler's already dead, or didn't you hear?
So your argument is...that it is possible for Hitler (or someone like him) to go to heaven...so long as he jumps through your hoops and become born again before he kicks the bucket.
Is that right?