You need to be very careful about the oil. Stick with they same synthetic compound that has always been ran in the motor. I have one motor which I run Cool Power in and another which I rung the Briggs 4T since these were the oils that the builder started with when I purchased the motors.
Pump gas works perfectly with these motors if you can find 83-87 octane that is ethanol free that would be the best.
Have fun. But I assume after a few track days you will be itching to start pack racing.