Hello Tomaloc,
Preflop: I'd also rather fold here whilst we can't really even see him having a wide 3betting range.
As played
Postflop: I'd still CB it cause you also have some backdoors, though it's a GS but it gives you a free card for the river and time to time even might be your overcards outs.

Plus we of course have position and some fold equity.
Best Regards.