100bb stacks, dont have many hands on BTN, but he's prob 20-30 vpip. CO is playing slightly looser bc a passive fish in the sb. BTN has enough of a clue to flat more hands to keep in sb.

CO opens 60, BTN calls 60, SB calls, I call 22 in BB.

AQ2r flop, it gets checked to BTN who half pots it for 120. SB folds, I call, CO folds. 

Turn is 5ss, I check, BTN snap checks it back.

River is Ao. I check, BTN bets 300 into 480, I ch/r to 1,100.

I'm curious as to whether or not we should bet 22 ourselves on the river, or checkraise it. Also, if we bet, is there a size that can induce a raise from a stronger naked trips hand?

I'm going to CREV the river spot, so what your thoughts on villains range for (my guess in bold):

Calls 2/3 pot bet: {Axs, KQ -remove A5s, A2s, AQ,AA,QQ}

Folds 2/3 river bet {QJ, KT, KJ, 54s -remove KTss KJss}

Bets river: { Axs, maybe KQ?, maybe some KJ KT}

B/c river: {kinda lost here, AJ, AT prob always b/c, A9/A8s sometimes?}

B/f river: {A3s/A4s/A6s/A7s ?}

Ch back river {QJ, 54s, maybe KQ, some KJ/KT, rest of flop air bets)