Great mod! The surface has a LOT of bite which is awesome. Like HighDef said, highly recommend you give a starting tree your best shot. Take a look at the one on top of MysteryManGER 's Car Jump Arena. Could be useful as well.
Great start for an alpha. I have run a few pulls and am liking it a lot.
I noticed that the ambient sounds are actually louder that the Moonhawk Drag car engine. When slowing down at the end you can hear the sound emitters passing by, try making them quieter but having longer range, also maybe fewer of them so the don't overlap.
If you look at the West Coast USA map you should be able to figure out how to integrate a light tree with triggers. A timing board would require lua code i would imagine. That would be great but I can't lua haha
Love the setting and the consideration toward PC performance too. Looking forward to more of this mod :)