AJo Preflop All In
$1/$2 - three limpers and I ($300) have AJo in HJ, I raise to $15, SB ($150ish) calls, two limpers fold and last limper (college kid) raises to $50 (with only $53 more behind). I go All-In. Small blind tanks and folds and limp/raise college kid calls. I think this was an awkward spot for me but the table had been sticky the whole night with calling one riase and I didn't see the SB stacking off here. I had heard the kid talking strategy a bit at the table which most social players tend to do and thought he could be raising with a lot of smaller pairs. Thoughts on this Preflop play?