I'm facing a raise preflop in the co (3 players have already entered), and I flat akjt6 with the akj being spades.

5 ways to the flop (10.5 SB): acqcts
Sb bets, Mp raises, hj 3b, I cold call 3, and the rest calls except 1 player

4 ways to the turn (22.5 SB): 6r
Sb checks, Hj bets, I raise??, sb folds, mp calls, hj 3b, I call, mp calls

River (20.25 BB): 8r (3 babies on board)
Mp checks, hj bets, I snap raise...

1) is pre just a toss?
2) is turn just a call?
3) is the river raise too big of a parlay?

I feel like I almost misplayed every street...

I'm not an expert at this game yet but I'll give you my opinion

1) I might limp with this since it's a decent high only hand but not sure if I would call a raise unless the raiser and table are very loose. But it's borderline to me.

2) It's very likely Hj also has broadway but I think you are correct to raise here as long as other people are in the hand. Anybody with a set, low or flush draw is likely to call here so charge them the maximum or get them to fold. I personally think you should have 4 bet. Yes if the low comes out you're likely to get quartered but you're increase in profits if you get half is more significant and both are about equally likely. I also think a good argument can be made for 4b the flop.

3) Here's where I would slow down. Unless you think Hj is stupid or a maniac he's repping broadway the whole way so you're getting quartered with 3 people putting money in. I'd just call, bad run out.

I'd put the petal to the metal on the flop for sure, you have a straight and two pair, and I'd want to really jam against anyone trying to go for a backdoor low and possibly make them even second-guess the merit of a non-nut club draw.

Turn you now have three pair and still the nuts, I think a raise is still good here.

River just call.

The problem with straights in big o or hi/lo is that there are three others also out there and a runner runner lo can take 1/2 the pot. Hi hand only has to fade clubs, board pairing or a low to potentially split the existing pot, assuming someone else has the same hand. Top and bottom pair is a redraw but not normally a winning one.

Well we're not often going to see the board pair since we have blockers.
Maybe I'm too entrenched in a LHE school of thought, but I'd like to charge max to backdoor lows even if we're likely going to just chop the high at best.

Though since it is big-o it's much more likely (than in lo8) for someone to have KJ23x or AA23x or even just KJ/AA and any two low cards.

I could be wrong in my thinking here, I wouldn't deny that I'm a novice at anything that's not LHE, but calling 3 cold on the flop seems wrong. I feel like the correct move is either 4-betting to charge draws or just folding because we're clearly playing for, at best, half the pot (if only one other person has KJ and all other high and bd-low draws miss). I feel like the AT blocker/redraw leans it more toward a 4-bet. Idk.

in the games i play in, you are scooping the hi at least 20 percent of the time on the flop.

We have 3 of 10 cards that act as blockers but none are clubs...i expect to chop hi or lose on a bad river more than i win and/or scoop and dont want to bloat pot in that spot.

fold pre ur hand isnt even debatable for a call... ont he turn u have bet and raise and reraise in front of u at this point i would imagine that owuld put you all in or close to it, u have broadway and 2 pair... gotta imagine they both have broadway and redraws... and u have no low redraw easy fold as well. Ur talking about playing for stacks with at best u get ur money back and ur boat redraw might not even be that good u have to think at least 1 has a set. Fold and find a better spot.

River raise is spew, pre probably a fold, rest is ok

Pretty hard to play for stacks in limit.

sry he said big o he didnt say limit big o.

He didn't mention bet sizes or stack sizes, and measured pot size at the beginning of each street in terms of small bet and big bet.
Should be obvious it's a limit game.

AK sooted hands are weaker because some1 cant make 2nd nut flush