Is this all hand built? Because if so, I don't really understand why your heartline rolls are so wide. Especially with that first one, it seems like it would be so easy (and perhaps better) to make it going straight up that incline. The second one looks more reasonable, but still a bit wide (at least for my taste). If the ride is tooled, then I understand why the rolls are shaped like that, but I think you could have done better.
Otherwise I really like the layout. The only (minor) complaint I have is the position of the last helix. It just sort of sticks out from the rest of the layout and since it seems like you were going for an ultra-compact ride, that's the last thing you want.