I would say if you are keeping it stock, I'd atleast get some nerf bars. Better tires possibly. Most races make you have a working Tether switch. Bark busters are also a good idea. That is the bare minimum I would do. IDK of anything in OH really. If you are into traveling and in NE Ohio, can come up to southern tier of NY for WNYOA, which is ranked #1 race series for dirtbikes and atvs in the country (not sure what category it is number 1 but it is for something), there is a race almost every weekend in the summer, and one of the races like this past weekends is a GNCC sanctioned event at Unadilla. Half of there races incorporate a small portion of MX tracks into the XC tracks. Lots of competitors, from 12 yrs old to 60, beginners to experts. Tracks are roughly 10 to 15 miles long. But as monkey said, just get out there and ride as hard as you can for 2 hours, it's the best practice you can get.
2008 700xx; Power Bomb header with power core 4 exhaust, Power Programmer III, pro armor nerfs, prm products control front and rear bumpers and full skid, 10" ITP rears, ITP Baja's fronts, RZR 2's all the way around, Uni filter, 13t sprocket, CCP steering Damper, DS450 shock swap, Dual Gasser Throttle, bar risers and Moose barkBusters. 730XX kit plus other engine mods!