Thinking you are going to replace the rollers, springs and caps?! Drill out the 'stakes' on the 3 screws then only use an impact driver on the screws.
Why replace the rotor? It's just a big chunk of metal that can not go bad. Maybe use a lighter model one if yours is of the heavier variety?
The bolt should be torqued to ~ 72 ftlbs.
If the mating surface for the rollers on the gear is very irregular you may consider replacing the gear.
An air impact would be VERY helpful.