The class would be Stock Honda. (390 lbs). You could also participate in cik125(modified 125/kz 385 lbs)
Most common tire is MG yellow although some have had issues there w / excessive wear or blistering. Some have used MG orange. Chassis setup obviously makes a difference. Wheels are the same as sprint.
I’ve never run Roebling Road but I’d expect gear ratios to be around 1.20. 19/23 15/18 16/19. Not sure chain oilers are allowed, but a good chain lube like silkolene applied every outing should be fine.
Some things to watch for sprint to RR is brake and steering components must be safety wired, a secondary cable or back up between brake pedal and master cylinders. Full width rear bumper, newer plastic ones meet requirements may be a bit much on drag compared to steel tube rear bumpers.