2-20 spread limit stud eight hand

[kstamps22]

I haven't posted in a long time but I've been thinking about this hand for about a week now and the more I think about it the more I think I really misplayed it. It has been a week so I can't remember the exact cards so if you can't comment that's fine.
I have been sitting less than 30min so I don't have any reads on playing types.

Limit-2/20, ante-2, bring in-2

3rd street
Seat 2: xx K bring in
Seat 3: xx 4 call
Hero: A[img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/heart.gif[/img] raise to 20
seat 5: xx Q call
everyone else folded.

4th Street: all bets were in increments of 20
seat 2: xx KK bet_call
seat 3: xx 6 4 call_call
Hero: A 2 3 4 [img]/images/graemlins/diamond.gif[/img] raise
seat 5: xx Q A call

5th street
seat 2: xx KK (catches high) bet
seat 3: xx 6 4 9 call
Hero: A 2 3 4 J call
Seat 5: xx Q A (catches high) call

6th street
seat 2: xx KK xx(high) bet_call
seat 3: xx 6 4 9 9 call_call
Hero: A 2 3 4 J 7 raise
seat 5: xx A Q xx(high) call

River
Seat 2: bet
seat 3: raise
Hero:
Seat 5:

My read was that seat 2 had filled up and I was pretty sure he would reraise. Should I have jammed here to trapp in the two second best for more bets or is it too likely that I might be second best. I was worried about seat 3. He check called all the way then suddenly led out starring right at my 74, it is possible he made a 64 on the river. Also I mght knock out seat 5 isolating my self with a lock for high and a better low. I'm was really not sure what was the correct play. If I raise it is definately imo getting capped.
any other comments would be appreciated, as I am still a bit new to stud 8