PF is fine. Are posters seriously advocating folding Axss when the entire table is playing the hand? This is a snap call PF in my book. I'll never be convinced otherwise, sorry
OTF I think we should be folding. This isn't a heads up pot-- flopping bottom pair in a 7-way pot is pretty weak. Would you call with a gutshot here? IMO we have a 5 out draw OTF. I fold.
As played, I wouldn't donk bet the turn. We're so rarely getting called by worse, unless villain has Ax. And if villain has Ax, he will bet the turn for us; then we shove AI.
As played, obviously we are never folding to turn raise.