You'll need to know the diameter of the rear tire. then you can use one of the many on line calculators to figure things out, such as
http://wahiduddin.net/calc/calc_speed_rpm.htm. (there are others)
To try to answer your main question, cruse speed rpm... I'm thinkin' 3000 sustained would be as much as I'd go, and I'd prefer less than that. My daily driver is right at 2000 at 70mph (with the overdrive engaged) Others will have more first hand info. Typical redline for a street engine? Probably mid to high 4's. Stay tuned..
Paul
