i would suggest getting rid of the power brakes. my car is 3650 lbs and i have manual brakes, it stops on a dime. then you could keep the existing cam. your car should be able to easily stop with manuals also.
the 250 should have plenty of tq to get that light car moving , especially with the T5 trans. it has a faily low 1st gear.
what weight oil are you running?
i suggest setting the valves properly and running it as is. tom
