That sure is a mighty part you're working with there.
The mold I just made was a mere 30mb, and an upcoming job is a shade bigger at 36mb.
One shortfall is my ancient computer (XP), so that halfway through the solid verify I do have to put a few more turns in the rubber band to stop it grinding to a halt :-)
Playing on my friend computer the other day with solidworks (doesn't have solidcam) it was way faster than mine during rebuilding the model etc. So much so that I considered waiting for him to go out and then running away with it ;-)
I think I too need an upgrade. Better start saving the pennies.