If he’s applied to MIT and looking at Ivies, I’d guess Stanford is also on your list? They have pretty generous financial aid. Check their net price calculator if you haven’t already.
As far as the UCs, he seems like he has stats that would possibly be in the running for a Regents scholarship at some of them. UCSB and UC Davis have the most generous amounts, $6k/year and $7.5k+/year, respectively.