depends how ur treat ur puppy.
if you talkin about the new tranny, i would wait for it to break in a little and then change the oil. i would say 10,000 miles and change it.
as of when you put redline, the tranny fluid will last you as long as 30,000 miles without wearing out, but since you drive hard, i would say 15,000 miles for best results.
plus switch to redline engine oil, that thing doesnt even wear out after 15,000 miles, but recommended to change every 10,000 miles if you drive the car hard.
the engine oil is BETTER than mobil 1, actually you can compare it to the mobil synthetic used by penske i think