Harry wasn't even willing to use hoarcruxes. If you won't kill a dying man to make someone else immortal, then you're not going to do it just to throw science at the wall to see what sticks.
True, so this isn't quite what HJPEV would do but more what would he do if he were slighlty less of an absolutist. (Actually has he ever explicitly said in text that he wouldn't do that. I suspect given his attitudes that you are correct, but I'm curious what the textual basis is.)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.