Very fine track, excellent work! Just 2 things to improve.
First, the maximum race length you can set is 2 laps, it can't be changed. I assume that is connected with the given length in the track description where it`s said to be 36 THOUSAND meters or so. So I could imagine more than 2 laps would be too long for AC.
Second is the AI. They choose curious lines and are generally very slow. With only a few laps practice I end up first after one lap starting from the back of the grid.
It would be great thing if you could fix these two things, thank you for your work untill now anyway!