In a live 40-min level $500 buy-in with 100 of 250 players remaining, I pick up 88 UTG with a 17bb stack.  I have 45% equity vs. calling hands (66+, AQ+, AJs).  In hindsight, I should probably shove there, but I generally don't shove with more than 15bb, so I raised 2.5.  UTG+1 (TAG) calls with 60bb stack and MP (avg player) calls with 25bb.  Flop is Ad-Ts-4d.

What is the play, I'm first to act.

1) I have no aguement with shoving pre-flop, but would like to hear thoughts on my PFR.

2) Assuming my raise, what lines can I take on the flop?  With 2-callers IP, I should probably assume someone called with a big ace (AQ/AJ), but I'm normally c-betting any ace or king high flop as the PFR.  Any less of a flop and I'm going to push thinking I have the best hand (unless it comes Q or J high). 

I bet 5bb, UTG+1 called, MP folded.  I checked a rag turn, UTG+1 bet and showed me AQ after I folded.