Early Step 5 - do you call this

[whynot?]

so heres the deal

early in a pca step 5 - table had been very tight and i opened up to attempt to get some easy chips. villain in this hand is the only other winning table (in truth didnt scope xsteinx) and he has a 24% roi at the 55 levels looked like it was in the 45 man games

do you call this overbet?

OKERSTARS GAME #13377664667: TOURNAMENT #67852251, $670+$30 HOLD'EM NO LIMIT - LEVEL II (15/30) - 2007/11/21 - 12:09:26 (ET)
Table '67852251 1' 9-max Seat #9 is the button
Seat 1: tfree1959 (1870 in chips)
Seat 2: mikebtn (1530 in chips)
Seat 3: dgrimreaper (1470 in chips)
Seat 4: alliiiiissaa (1400 in chips)
Seat 5: Uniceja (1550 in chips)
Seat 6: jerzeeshore (1350 in chips)
Seat 7: whynot138 (1315 in chips)
Seat 8: ramsof21 (1395 in chips)
Seat 9: xthesteinx (1620 in chips)
tfree1959: posts small blind 15
mikebtn: posts big blind 30
*** HOLE CARDS ***
Dealt to whynot138 [Js Kd]
dgrimreaper: folds
alliiiiissaa: folds
Uniceja: folds
jerzeeshore: folds
whynot138: raises 60 to 90
ramsof21: folds
xthesteinx: folds
tfree1959: folds
mikebtn: calls 60
*** FLOP *** [Jd Qd 6s]
mikebtn: checks
whynot138: checks
*** TURN *** [Jd Qd 6s] [2c]
mikebtn: checks
whynot138: bets 90
mikebtn: calls 90
*** RIVER *** [Jd Qd 6s 2c] [4h]
mikebtn: bets 600
Whynot?????