tb17

I would most likely lead either the flop or the turn, but definitely not both if you're not planning on getting it in. Also I would probably bet less on the flop, yes there are 4 players, but 2/3 pot on the flop shows quite a bit of strength in a limped pot, enough to know that you are probably not just leading with complete air. If the pot is 2400, I would make it 1k-1400. Turn is fine, but I'd also consider betting less than you did.

I also don't see why we wouldn't lead river and fold to a raise. No draws got there, only KdQd or weird two pair/flopped sets get you. The pot size is only about 13k and theres 27k behind effective stacks. We can B/F 5-6k with confidence while not being put in this weird spot of a massive overbet. I assume we were checking to bluff catch, but if we can't bluff catch then I like a B/F more.

I think the flop raise is a little big, I like to keep it around 8-10 BBs, you don't really need to worry about MP+1 calling light. I also would probably call on the flop, as donk bets usually don't have the strength to call such a big re-raise without hands that have you beat by a lot.

Turn I think we can raise as well since he's leading again on a flushed board after you showed a lot of strength. Since you have the Ad, it's hard to put him on a semi-bluff, it's more likely he hit his own flush, he's trying to either protect his non-flush hand or bluff you off it completely. Obviously you are showing a ton of strength here but assuming he's competent he should have a fairly strong range here.

I don't think we're folding the river. If anything, I might shove the river since it's about a 80% pot sized bet and we get calls from all Qs and worse flushes

I think we have to bet the flop as SB has a huge range of callable hands here. In addition a lot of the hands we lose to most likely 3b Pre with 25BB stacks against a mere button raise (AA,KK, QQ AQ, KQs, 66, 22 sometimes)

Turn is fine

River: While I do think you're right that it is a fold, I don't think it really is a bluff catcher. There are plenty of Q's you beat and some A's may bet this as well as you really haven't shown any semblance of a Q, you look like you are representing more of a mid pair or an Ace high (by checking the flop) that got there on the turn.

If you bet the flop and he called and the hand played the same, it's a much easier fold as a pot sized bet would be basically for stacks or close to it.

I'm a full time worker and only play MTTs 3-4 days a week. I'd be interested in this if we can get a few who play the ET Night Pokerstars tourneys as they are all I have time for. Skype tbauza17 or maybe we can get a discord going