Villain has low c-bet and very high fold to 3bet stats, but only 150 hands sample. All his 3bets I had seen were QQ+, but again small sample

Think it's standard.

Here I was thinking that his range will be very strong given his apparently tight nature and low-cbet stat so I'd have low fold equity. I also tend to put gutshots without fd or bdfd on calling range to bluff on later streets when flush doesn't get there since I'm raising fds often and then my range would be too weak when the flush doesn't get there after I raise making it easy to overbluff. Think check is standard but a bet is ok too.

Here if he had checked I'd bet and I think a raise is ok but I like that my hand is kinda "disguised". Also think that since he's tight on c-bets I couldn't raise a sizing that would make him fold strong flushdraws as his range is so protected by overpairs, strong top pairs and JJ. Not sure my thinking makes a ton of sense here tho. Also with my draw being dominatable don't want to bloat the pot.

Here I think it's just an obvious bluff choice. When I call the turn vs that sizing I'll have a good amount of 9x, and I unblock all his flushdraws. In game I was thinking that I block a his 9x decently but in retrospect I don't think he even has any 9x in his pre-flop 3bet range from what Id seen from him previously. Besides that, no hand with less SDV in my range.
My question here is sizing. I knew I was going big, the question was how big. I know I was thinking about how inelastic his range would be vs an overbet but I think I might have overestimated that and shot myself in the foot by going this small. After I also considered that when no draw gets there and he is tight maybe a small bet would be better?

Appreciate any opinions and criticism of my thought process.