I don't know about Windsor. Sure he thinks Barnaby is a spud, but I imagine he could work with Turnbull. I'd be cautiously optimistic he would give supply to the ALP again but I wouldn't be surprised if he didn't.
I recall Wilkie stringing the ALP along for ages, and I think he is
seriously pissed that Gillard then reneged on the anti-pokies legislation she promised him. If he's feeling spiteful he's the sort of MP who would grant the Coalition supply to "teach the ALP a lesson". But boy do his constituents seem to love him.