Good fold mate, chances are his hand is better than top 5% with that kind of 3bet.
KJs vs top 5% of hands(88+, AJs, KQs, AKo)
33%
equity(32.59% win, 0.51% tie... 32.745% true equity)
Equity needed to call... 35 to go... 55 in pot... 90 including your call...
35/90 = 38.9
However, against aggressive opponents you CAN call here. They will be giving out a big cbet on the flop no matter which card comes so THEORETICALLY as long as you can tell whether you are ahead or behind without getting too attached, calling is +EV vs aggressive players, however you will have some bad beats vs JJ+ and maybe AQ your suit/AJo/AKo which is a BIG part of the villains range, so I'd fold unless I felt very comfortable post flop vs said villain.
I don't see 4bet bluffing being very profitable UNLESS you know the villain fold to a lot of 4bets. For a 3x 4Bet to be +EV (Raising to $1.20) you would need your villain to fold AT LEAST 25% of the time and I feel like he would be calling a lot of 3x 4bets without having any information on him PLUS you would still have to be very comfortable playing against him post flop after the 4bet else you lose EV there, I wouldn't attempt a 3x 4bet unless I felt the villain would fold about 35%+ of the time as with pots that large, a lot of villains will shove any two cards or pair they hit on the flop which I am not always comfortable playing against.