Sandown on a Saturday or Sunday only because it's close to home makes it easy to get to.
If Calder is running events I'd be keen for that too but I heard they have a problem with their insurance so no events are running there???
I'd do Winton on a Saturday only or worst case a Friday.
Phillip island also the same deal Friday or Saturday but less keen as its hard to recover the car the further out it is.
Depending but i'd probably go upto $250 for an event with less cars then the usual sprint days.