dude.. i dont think u should ever be limping in with the AQs here.. ever...
if u wanna mix up ur play, then throw in some pf raises with suited connectors/low pp's every now and then... that should be enough to keep ur opponents guessing whenever u raise pf..

but limping in with AQs is just baaaddd...

i also hate the pf flat call, as ur just setting urself up to play a big pot with multiple oppoonents on the flop, where you have not established urself as the Pf raiser.. And if u hit TP, and get action, ur going to be very confused about ur hand on whether u are ahead or behind. And chances are, majority of the time u do make TP in these types of hands and get action, ur gonna be behind.