First, KNOTTS, KNOTTS, KNOTTS, KNOTTS! It's in your home state and I see you haven't been there; get to it! It happens to be one of my all time favorite parks and my second favorite CF park to CP.
Then, in roughly this priority:
Kentucky Kingdom ($40, awesome rides, half-day commitment at most, and an hour from KI = no brainer)
SFGAdv (El Toro
Dollywood (SDC is a good alternative)
WDW (again)/USO [low on priority because of expense, but if you can afford it these should be at the top of your list]
The CP/KI/KK trio and BGW/KD and Hershey/Knoebels dous are particularly legendary, but regardless, putting them together helps also make it more realistic. I tried to make my list very
specific because otherwise I could list off every park with an RMC or one or two stellar coasters and that would be half the major parks you see thrown around on this site daily, defeating the purpose. I also excluded an "other considerations" list for the same reason, but by no means think anything wrong of any park I didn't list. I highly encourage you find your way out to the other parks I abstained from this list, but if you had only months to live and wanted to know exactly
what parks to visit this is what I'd give you.