I'd probably 3bet just slightly larger ($50ish) to offer poorer setmining odds (especially since we won't be able to fold postflop in this small SPR pot) plus help make up for the fact we're OOP, but it's no huge deal.
SPR is 2.5 and board is slightly drawy with the straight draw. I'm not looking to drag this out over 3 streets, so I PSB the flop to shove the turn. We also get max value ASAP from overpairs / draws not willing to fold to the first bet (but who could perhaps sometimes eventually fold to the second bet). I agree with your villains comment.
If I've done the math right, we've left ourselves with just $165 left in a $279 pot, so the river should be a trivial shove at this point. However, we could have easily gotten stacks in on the turn had we PSB the flop (which would have left just a $155 shove into $300 on the turn).
The overriding consideration for me regarding betsizing is whether we feel committed.
Thanks to preflop and setting up a very small SPR of 2.5, we should feel 100% committed and looking to get our stacks in. On bone dry boards, and/or against opponents who could be induced into bluffing, I'd be more fine with attempting to do things in 3 postlfop streets, although by the time the river hits you'll see so many possible better hands you'll often have a hard time shipping in the last of your chips. So even on dry boards (let alone wet ones) I'd still lean to trying to get the chips in ASAP (again noting that the flop is where we're going to get paid off the most as TP / draws typically never fold to one bet so we're losing value here by underbetting).
If we don't feel committed (let's say we're hugely deep and the SPR is like 12 or whatever) then sizing down our bets (or even checking) is fine. But you shouldn't be doing this when committed, imo.
ETA: Really surprised by the other comments. The SPR is fricken lol 2.5; if you're not getting stacks in you're doing something wrong, imo (SPR 2.5 means stacks can go in with 3 lol bets of just ~40% PSB or just 2 very reasonable bets of ~70% PSB).
GcluelessNLnoobG
Last edited by gobbledygeek; 10-17-2018 at 11:28 AM.