top two river play vs reg

UTG limper is 19-0 over a few orbits
villain is 17-12 and a bit sticky. He's never going to bluff raise on this runout. QT is in his range, so are all suited aces, A8o+, i doubt he has sets.
he sees me as active.

So, sizing? I want to generate calls from the A8+ in his range, 1/2 pot?
turn play look ok?

$0.10/$0.25 No Limit Holdem
8 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($27.11) 108bb
UTG+1 ($18.63) 75bb
daven (MP1) ($81.21) 325bb
MP2 ($21.65) 87bb
CO ($28.09) 112bb
BTN ($13.82) 55bb
SB ($25) 100bb
BB ($27.22) 109bb

Pre-Flop: ($0.35, 8 players) daven is MP1 :kd: :as:
1 fold, UTG+1 calls $0.25, daven raises to $1.10, 4 folds, BB calls $0.85, UTG+1 folds

Flop: :ks: :jc: :5d: ($2.55, 2 players)
BB checks, daven bets $2, BB calls $2

Turn: :ah: ($6.55, 2 players)
BB checks, daven bets $4.80, BB calls $4.80

River: :2s: ($16.15, 2 players)
BB checks, daven bets $???,

When he calls ott: At, Kj, Jt, Qt, maybe JJ and 55, but probably not sets. Idk. I'm rusty as balls but seems like clear value otr. $11-12