If you have the standard
(Non-cassette) version of the Edge, I'm pretty sure that it uses the same bearing as the MPIII, 4 & 5:
However, if yours is the cassette version, the large bearing should still be the same (6917) but the single 6302 bearing has been replaced by two smaller bearings within the free hub as shown below:
I recommend using a 6901-2RS instead of the 6901-ZZ for the freehub as the rubber seals should help to keep the grease in and the dirt and water out.
I suggest that you try searching eBay for a
6917-2RS bearing and see what you can find.
Alan