First, I would like to say this looks amazing, and I can't wait to try it up, good work
Why not just use the pit box, instead of making an actual real pitlane etc... I think, some tracks in USA, have this similiar option, I don't really remember here.
So, if possible, with the few objects that you have left, you put the Pit Boxes on the left side, ofcourse paralell to the finish line, and some signals before it, so drivers can slow down and not missing it.
Sorry for my english, hope you understand what I am trying to say