i gotta say, i don't like this play.
yes, the guys probably a donk with that stack, but lets face it, what hand other than a draw would you play like this? you're not playing a set this way. I doubt you're calling the flop raise with A6. the only possible holding here is the draw when you bet out full pot.
Yes, it's confusing, but against most halfway decent opponents, your hand becomes really obvious here. the only possible hand he can really be afraid of is
[6h].
i'm not sure what play i'd like to see here the most, since obviously i don't wanna check and see him bet pot or push. but i think he's most likely to bet $200 if checked to, and i think you can call that expecting to get paid on the river if you hit.
I'm not sure if that's the best play iether, but i don't particuarlly think that betting pot into him is your best option here.