Ya I agree with your thoughts on turn.
X/C turn oop isnt great as we have pretty much no sdv and can expect villain to x/b any over pair on any club, A or K river meaning we don't get paid when we hit.

I would go for the XR otf since this flop will be stabed a lot when checked to.
It's hard to develop a XCalling range in this kind of board.
Villain can easily barrel turn/river with busted draws, airs, or anything since this board will have a lot of FE as you played.

I'd prefer x/r OTF over x/r OTT as people are stationary and when doing this OTT you give him the opportunity to make mistakes by betting low PP he shouldn't bet for a big sizing and then having to call because he only has 2$ behind.

In this hand, his sizing was ok OTT but I still doubt you'll get many folds on 5NL, but I can be wrong! I just don't think people fold a PP there

personally I like to just bet big OTF then jam OTT for max fold equity and not letting him spazz out. Or x/r OTF and if he doesn't bet just bluff good cards OTT for a large sizing. depends on his statistics but you'll need way more (500ish) to change your play vs a particular opponent, so I would put the populations range into flopzilla and look how he does on this board and how much folds we can generate vs their range by betting twice versus x/r gii