JJ v 4 players

Hero call, its too early to play for stacks

Given the stack sizes I will assume that this is early stage in the tournament. I don't really like calling here because we are not the last player to act and if we end up facing a 4Bet we have to fold. Because of that I believe the best play would be a small 4Bet to 600 with a view to fold against a 5Bet or CBetting any flop.

You believe ? I thought the 4-bet was the worst moove here.

4-bet for value ? Bet/fold looks like a bluff to me.

I think there are 2 options here, either call to set mine and proceed with nothing worse than set or, given the admittedly limited stats you have on opponents, 4bet.
In my opinion the action of the OR (player 3) is of most interest.
Player 4 could be any 2. Player 5 I pretty much discount altogether - who plays QQ+ this way - a min 3bet to a EP raise and call?
I dont think a small 4bet is going to help much, too many possible callers then you are back to set mining again.
I would make it like 800 and would only consider folding pre to a shove from the OR or to shove by 2+ villains

I firmly believe the min4Bet will win more chips in the long run compared to set mining in this spot. This is because of several reasons:
-when we 4Bet villains will rarely see it as a bluff or JJ type hand but will more often perceive it as a KK+ hand
-because of the above fact we fold out a lot of QQ and AJs-AK type hands resulting in more chips won
-if we do get called it is unlikely villain will continue on an A high board when we CBet because most of the time they will shove their KK preflop and very often AA as well, while they will hav no problem throwing away their JJ-KK type hands on Ahigh boards.

Because of these reasons and the fact we will flop only about 12% of the time (and there are no guarantees we will stack oponnents in those situations) I believe we have a better cEV with a 4Bet.