Pre flop I prefer to use suited small Ax as part of my calling range from the BB. It's always better to use hands which are not profitable calls for your 3 bet bluffs such as small suited Kx Qx T7s etc. I pad that out with suited connectors.

As played I would bet a little over half pot on the flop to not look so weak as much as anything else. It's tough to get value from worse, but we do expect villain to float IP with his overcards a lot. Turn size looks fine, we're only really trying to make him fold his floats and maybe 55 or 66.

The river is a standard check fold, especially vs an unknown. don't be too concerned with bluff catching at 10NL, particularly in 3 bet pots where people will play more straightforward.

I think this is a fold on the river as there are just not that many airballs in villains range nor are there any worse 8s value betting here.

I would expect to see straights, sets and just value towning you with better hands.

I'm with @StratoMan on this one. The sizing is tempting, but I can't see any worse hands or bluffs betting here especially because of monotone board making missed flushdraws that much more unlikely.