Don't see a real need for big men on this team. In my mind, we have 6 guys I'm comfortable playing in the playoffs and 4 that I'm OK playing big minutes (KG, Perk, Sheed, and BBD). If anything, we're much shallower at the 1-3 spots.
If we were going to go big for some reason, I'd much prefer Battie to Blount. Though defensive numbers may not prove it, Battie was (and likely still is) a dramatically better team defender than Blount.
Dooling sounds like a great fit though. Can play some 1 or 2 and adds some more depth.