Hero holds AKs (sorry I don't now why it's not showing)

I'm new to this € site. (it's a 5max table)
CO: ( €50.00 EUR ) - VPIP: 27, PFR: 25, 3B: 13, AF: 4.1, Hands: 62
Hero: Seen as a reg not to much reads on me except i play around 26/21/7

I don't have to much info on villain posflop except his sizings are as clean as preflop for what I've seen.

This the first 3-Bet pot we play.

With no spade on the flop, I think checking is the best option.
Even though it looks pretty weak or even face-up. If I Cbet here, it's because I decided to 3barrel on good turn & river to rep an overpair and to make him fold PP's or low/medium combo pairs. Unfortunately, I have no idea about his tendancies, will he call or not one of the Pair I would like him to fold?
I ended up C-betting...

Question 1:
Do you C-Bet here? if it's a mix, how often do you check and C-Bet? (optional: why)

When the Ace came on the turn, I decided I wasn't folding so I decided to bet big for value because I saw other regulars calling 2 barrels way too loose in 3-Bet pots when they have position. I think my sizing was bad here (may be to much exploitative based on not enough hands on the pool, and because I decided I was going to call)

Question 2:
Assuming you bet a more standard 12 and get raised all-in here. What do you think?