boring aces hand

[Vehn]

30/60 live/5 bet cap. I open raise in early position with red aces. Super-maniac 3-bets in MP as usual. Loose passive LP coldcalls for $90. SB 4-bets. SB is a kid trying to play well and showing off to his sweater. I'm not sure what to make of his play yet. I call loudly. Maniac caps and everyone calls. Pot = $625.

Flop is 9c 8s 3h. SB checks, I bet, maniac raises, LP coldcalls, SB 3-bets, I call loudly, maniac 4-bets, LP calls cold, SB caps and I give up and call quietly while everyone else does. Pot = $1230.

Turn is the Jc. SB bets out, I raise loudly, maniac coldcalls, LP thinks for a long time and coldcalls, SB calls. Pot = $1705.

River is the Jh. SB bets out again. Now what? Is it close?