That's probably ideal, but don't forget to allow enough time to 'stop and smell the flowers'. Some people get so engrossed in miles ridden and feet climbed that they loose sight of the fact they are traversing a fantastic area.
Although it can be, and commonly is, blistering hot, remember that if it comes in overcast and drizzly (not that un common) the down hills can be very, very cold as you will be motionless in a 30mph wind for well over an hour. Buffs, leggings, thin gloves and even simple overshoes / bread bags can all prove useful.