More pre- for sure.

Smaller on flop as played imo though, maybe 60c. Villain will most likely go all the way with Kx and there isn't a need to bet bigger given we won't improve just over half the time. Bet turn half pot too for similar reasoning and c/f unimproved or overbet jam if 10x or a diamond rivers.

It's better to bet the turn, as we fold out the remaining weak holdings, we can set our own price and we maximise value when we do hit, since we can just cbet all in, rather than donk jamming or hoping that villain bets and we can crai. Chk/jam the turn is a bad play at these stakes as nobody folds top pair or better, but it can be a useful line against regs as you move up the stakes.