Land. Somewhere with a field, some hills/mountains in the distance, thick forest, generally cold.
I'd build a house and a pond and kiss this world good bye.
I'd need to be within driving distance of an airport, I suppose. So I can drop in on the real world every so often.
Land
House
Pond
Truck
Guns
A Cessna
I can't think of much else.
edit probably some attorneys and financial advisors to handle my estate management stuff, too.