If 230ft is how tall the structure is, (not the track) then the track would not end up 7ft off the ground at the bottom. You have to take in to consideration the catwalk railings that go along the side of the track, as well as any weather devices, anemometer, or cameras that might be mounted on polls that they may need to put on top of the coaster. Like show in the picture below:
If this is the case then I after all is said and done I would expect see the track about 3ft off the ground at the bottom of the first drop.