NL100 AKo

Under the assumption he has that wide of a range the only option is calldown.
If you plan on c/f the turn you should not c/c the flop as you're putting in lots of dead money which is exploitable.

If he's that aggressive I prefer to cbet myself:
Most opponents are floating a lot anyway, so we can valuebet vs stuff like AQo and KJs!

I didn't really understand the last thing you said. If we cbet the flop then we are barreling to fold out these hands that you mentioned (although we have them beat)? And ofc also other potential floats.

If so, then another quesiton arises:

Are going to bet the river as well if we get called on the turn?

Sorry, I think my post wasn't clear.

I meant that an aggressive opponent will probably bet most of the time on the flop if we check to him, but at the same time he will not fold to a bet either.
And overall our range for betting is weaker than the one for c/calling because when we bet we can have pure air whereas when we c/c we usually have at least smth like Ahigh or equity.

So the range that gets money in on the flop is wider if we bet.
And subsequently he will bet this weak range on the turn vs a check whereas if we c/c the flop some air hands will just give up.

So my comment was not about the turnbet, it was about the cbet on the flop.
On the turn I'd indeed c/c after cbetting.

About your last question:
It's the other way around: I'd only bet the turn if I planned on betting the river because oftentimes people call twice with some SD-value and fold the river.

But then I'm obv turning my hand into a bluff on the turn.