Good rule of thumb is 1 stud per horsepower. I bought some extreme max studs off ebay last year and was not happy with how much wear they showed after about 300 miles. You can't go wrong with the woody's IMO.
What size lug? Dont go to tall on the studs. Just want alittle sticking out.
I have 153 Woodys mega bites, doubles and singles alternating. I got mine from SRP (smart racer products) in N.H. studs, backers, drill, template for alittle over 300.00 last year. Hooks good.