5/10 BLUFFTOWN limped pot

[IRIVERU]

Sitting in my regular 5/10 live game 8 handed
I have 1200 in front of me, mostly shortstackers, the villian is an overloose player who covers me by around 200.
utg limps. co(villian) calls 10. I complete sb with A3o. BB checks. FLOP comes JJ2. i check BB checks limper checks villian bets 40. villian loves to slowplay and i did not see him having a jack here almost ever. I call everyone else folds. Pot is 140 dollars. TURN 3. i check. villian bets 200. I def. didnt see him having a jack here. I decide to continue my orginal plan to bluff and raise to 450. I made it 450 because i wanted it to really seem I had a big hand because min raises are pretty scary and I didnt wanna over raise it so I dont get priced in. HE INSTASHOVES. i sit there and think about his range. i do not think he has a jack. i have never seen him limp aces or kings after an utg limper. I guess since I have seen him big moves with air and not being able to put him on a hand led me to calling. WHAT doeS he HAVE???????