Are you sure you wouldn't rather have the 2008-2012 body? It's a bit easier to upgrade or repair.
(At work I have a 15" MBP with the 2013 body. I'm eligible for upgrading it, but what would I replace it with that could possibly be better? Literally the only downside that I care about is the fact that most conference rooms at work no longer have magsafes lying around.)