Best suggestion I can give you is dont neglect leaking bags.
Replace them as soon as you discover them and you stand alot better chance of not killing the compressor.
Plan on replacing all of the bags and the compressor atleast once in the normal lifetime of the car.
If it were me, I'd swap out the front bags as a pair, then the rear bags as a pair then the compressor. when you replace the compressor definatley get one of eddies Spider Valves.