Hi Glenn,
This is probably the most ideal way to bolt, you can estabish what is worth bolting and where you want to place your bolts on toprope (making the clips as effotrless as possible and safe).
I dont know if you have bolted before, if not take someone with you who has. There any many factors to bolting, its not as simple as drilling a hole and hammering a pin in (rock type, best type of steel for your area, etc.
Check out \"the good guide to bolting on\"
http://www.geckogrips.co.za/
Cheers
Justin