one gentle lap on the track and your tires are scrubbed -another lap for heat and you're good to go.
as for street scrubbing, you just slowly incresing lean-angle, preferably on dry, rough road surface. you can even use a big parking lot if you're in a hurry.
you don't need to do anything to the tire beforehand; that'd be a waste of time. ride it carefully for the first 5-10 miles and that's it.
D208s are perfectly good rubber. don't fall into the tire trap by overthinking your rubber. good racers can lap within1-2 seconds on street tires as their race tires.
if you're going that fast on the street that grip is an issue, you're going too fast and you're going to crash hard.:2bitchsla