The rotor only uses 2 screws I believe anyways...you don't need 4.
As for getting the axle nut off, I used a 1/2" breaker bar...then slipped the hydraulic jack handle over the breaker bar...so it was about 4 feet long. That's enough torque to get it off.
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget