Playing Top Set in NL50 at Paradise

[Xelent]

I was wondering how this hand should be played on the turn. There were a couple of limpers to my friend in the SB who looked at JJ. He raised to $3.50 Both callers had around $45 behind as did he. Flop comes JT4 with two to a suit. He leads $5 into the $10 pot and both villains call. Turn comes 6, putting a 3 flush on the board and he pushes in for about $35.

He had no information about the villains so he assumed they were average players for those stakes.