Just over 300 miles per day, spread it over say 10 hours loads of stops and you'll have no probs at all, std seat should be fine.
Ride in waterproofs, saves having to pack them or put them on if it starts to rain.
As I said in an earlier post today, I did 1000 miles in less than 24 hrs on a C90 in May so you'll do it easy, enjoy the ride.