Hey Ben, long time no see! Nice to (finally) see you around!
As of right now, we haven't announced anything league-wise yet for the next season.
I'm not sure how rF2 would run on your system but rF1 would certainly run great as your system as it's very similar to what I had until X-mas (I just got a new killer PC). Right now, you can't go wrong very much with rF1 because of the
incredible amount of cars and tracks immediately available for free, although CAD$48 (@Trymedia) for a 6-years old game would be a bit much to my taste as it's most likely that you won't play it for the next 6 years when everyone has switched to rF2...
If you're planning on upgrading your PC soon, then you may consider rF2, as long as you keep in mind that it's currently a beta and doesn't have many cars and tracks yet (although that could change quickly, a lot of people have started work on rF2 mods already) and the next beta releases may include more official cars (a LOT of cars are promised for the final release).
Sorry for not really answering your question...
Don't hesitate to PM me if you need help with rF1/2 or have more specific questions (or wanna go for a beer!

)