2nl flop trips - value?

Back at 2nl after cashing out large % of BR and having nightmare day yesterday at 5nl. Played a light session this evening, at first this seemed an uninteresting hand, but upon review I'm thinking I'm losing value here. I think it's these seemingly uninteresting hands that need more focus in order to maximise my winrate.

No HUD, so only notes to go by.

pfr is mostly unknown, seen him raise a couple of times, cbet flop takes it down.
sb is bad 2nl m-tabling reg, I was oop on another table with him and he kept cold calling my 3bets pre, so I moved table to jesus seat him. A couple of hands previous to this one he 3b/f his bu vs my cold 4b from sb with KK.
Notes - cold calls 3bets, likes to bluff raise.

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) - PokerStars Hand Converter from HandHistoryConverter.com

Button ($0.81)
SB ($4.27)
Hero (BB) ($6.01)
UTG ($5)
MP ($0.97)
CO ($4.76)

Preflop: Hero is BB with 5, A
2 folds, CO bets $0.06, 1 fold, SB calls $0.05, Hero calls $0.04

Flop: ($0.18) 5, 2, 5 (3 players)
SB checks, Hero checks, CO bets $0.13, SB raises to $0.32, Hero raises to $0.84, 2 folds

Total pot: $0.95 | Rake: $0.03

Pre flop, should I be squeezing here? I don't feel I have much fold equity after the KK hand, and since pfr is unknown, seems risky.

I check flop because I'm confident pfr is gonna b/f most of his range, I intend to just flat pfr but bad reg raises.

I raise because I hope he is still steaming from my 4bet earlier, obv want him to spew his pairs or find a big bluff with his air. Doesn't seem like a great plan when pfr is still in and might find a call with his overs, and sb might barrel another street.
And does my flop 3b sizing suck? Sure looks like it to me upon review, I'd be all over this sizing if someone else posted this hand.

Curious what people think optimal play is here. Cheers.