A bit of topic, but I'll try to answer these questions:
- You shouldn't get lower fps with this mod than those you get on GTL. Having more or less the same amount of polys and textures on these cars, and using almost the same graphic engine the result shouldn't be very different. But keep in mind that this depends on the computer, and the level of detail you're using etc. The default installation of the mod will include Hi-Res textures, but we have tested the mod in a field with 100 cars and it worked fine on a computer bought the last year. Other mods have problems with FPS because the models have too many polys, etc.
- Yes, you can run championships with this mod. I guess you're talking about offline championships. The mod will include some, but you may define your own ones just using the notepad. But we're not having cars locked by default, so you won't need to earn money or experience to access a certain championship (that may be easily changed if you want to do it).
Almost anything you see on GTR2 or GTL can be done on rFactor, as they're using basically the same base (ISI's engine), just with slight modifications.