Well, i disagree with Portem!ne, i quite like the colors.
Layout looks like old "B&M" style, but its a bit short.
Supports build before terraforming? That ends up with alot of rework later on.
Because i don't think you will build only on flatland. After watching other ones "DAI3" designs, a entry without any terraforming has no chance for a win. So most support work could be for nothing if you terraform the land below.
Some water besides the coaster isn't that bad, but an interaction with the track, maybe below the loop could be more interesting for the peeps. (like the ponds below the loop on Nemesis Inferno)
The flatrides, well, i don't know why some people build flatrides near the coaster.
Because its an "Design an Invert" and not "Design an Park/Area".
But they can give some atmosphere later on.
Cheleste