Buy new or use what I have

This has been my dellima since I got this car. I should have just bought a kit to begin with, it probably would have been cheaper lol.

I have some rotors that appear to never have been used, bearings pressed in already and there is still grease in the hub. Only problem is they sat for years and weather brought some surface rust, they are still smooth but red in color and probably not as smooth as new. I called around to get them on a lathe but 40-50 bucks no thanks, I can buy new ones from rock auto for 60-80. I'd rather buy from a local parts store since I want the car put back together by next week but they are double the price of RA

Should I use these or buy new ones (73-76 a body or newer diplomat)? If I buy new ones do I need bearings? What bearings and races do I need?

Thanks.

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