$25NL 6max, get max value or induce a bluff?

Before I sat down I saw a HH where this villian opened KJo and called a small 3bet OOP. With the Js, he donk-shoved a As2s8s board, which was effectively 3x the pot. So knowing villian is prone to spazzing out, do you let draws see a free river or get max value from worse kings and draws? Villian knows nothing about me

Poker Stars $0.10/$0.25 No Limit Hold'em - 5 players

CO: $25.15
BTN: $24.65
SB: $9.20
BB: $25.05
Hero (UTG): $23.75

Pre Flop: ($0.35) Hero is UTG with Q K
Hero raises to $1, 1 fold, BTN calls $1, 1 fold, BB calls $0.75

Flop: ($3.10) K 3 9 (3 players)
BB checks, Hero bets $1.95, BTN folds, BB calls $1.95

Turn: ($7.00) A (2 players)
BB checks, Hero ...

I would say he doesn't have a flush draw since he donked last time with it. Check behind and get value on the river.

ez pot control
if he has the ace you lose the least
if he has crap you can sometimes induce a bluff

A check behind also get's a lot more calls from bad K's and good 9's on the river from bad players, compared to betting the turn.