I've started a 6handed table with villain, we've played around 25 hands so far and he appears to be quite aggressive, 3betting me alot preflop, raising a lot of flops (caught him completely bluffing once on sth like K66) and generally playing pretty action-packed. Haven't seen much/any SDs really except the one mentioned.

Call + be prepared to bluff some rivers

If you call turn, the pot will be about 30$ and you'll have around 16.5$ in effective stacks on the river. It's difficult to know if he'll be willing to fold any part of his range on the river and this is what makes this spot tricky imo.

With a little bit more money behind, this is a trivial call. Having a backdoor draw is great, because we'll get more value when we hit (specifically on a K river) and we'll also be able to rep clubs or middling straight draws really well when they fill in. It's a perfect hand to draw with in position because every river that changes the board either hits your hand or hits your range.

Even with stack sizes as they are you should be able to profitably call here. Given that you have a pair to go along with your wrap (which isn't a marginal wrap at all), you should have enough equity against his range and at least a few really good bluff cards where he'll be check/folding a decent bit even with those stack sizes (the 6 of clubs is a good example).

flop call is fine/standard?

Flop call is loose. But worth doing from time to time for balance, but it's better to do with a none nut FD but with your hand it's not really that bad.

As for turn, call and get ready to ship stack in middle if he checks. Especially if a club hits.