Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($99)
Hero ($114.75)
SB ($91.50)
BB ($177.50)
UTG ($112.95)
UTG+1 ($99)
UTG+2 ($208.98)
MP1 ($54)
MP2 ($47.95)
MP3 ($95)

Preflop: Hero is Button with J, A. SB posts a blind of $0.50.
2 folds, UTG+2 calls $1, 2 folds, MP3 calls $1, CO calls $1, Hero ???

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One of the limpers is 30/8, another is 15/5, other is unknown.

What's your move here, and what range will you generally raise it up in this position?