as long as u do get any wheel spin u should be rite, the subi's awd so it's get the benifit there. dont think their that quick but unless turboed, mates got a forester and thats an absolute slug. its got ok pickup to about 60 after that it sucks, and booting it at 80 its got no pickup.
should be an easy win, subi mite get the jump off the line but u should catch him in first high up in rpm and into second.
cheers
ryan