[pickleboy]

that should be fine the wheels you mentioned will give you about 7200 sfpm and that is on the top side of speed for starting out. as you get more experience with the machine you may be able to move to 10" wheels but if you do be extra cafeful. i rum faster than the recommended buffing speed in the caswell manual but i have gotten a feel for my machine and feel i get a good finish faster with oversize wheels. keep in mind though i have been at this for over a year working at it for about 2-4 hrs a day 6 days a week.