Just a word of advice, even though the MC and wheel cylinders are new, take em apart and check out the bore and cups. Who knows how long they may have sat on a shelf or if they were assembled right in the first place. Too much riding on them to take for granted.
As for the seals, it depends on how far you want to go. In order to replace, you'll have to pull the axles. Not a big job,but you'd have to tear into the differential a little. If they don't show any signs of leaking, I wouldn't worry too much about it.
