I reccomend grabbing a Warthog from the building in Forge then taking the port and running the hog down the ramp. You get a great amount of air at the end, plus your shields take a beating sometimes. But great ramp.
This is a cool idea. From a jumpers prospective it sems as if at a certain point the phsyics hit a max velocity for the mongoose. If you were to make it steeper to where if you stood on it you slid, then you could make a giant slide jumpping ramp that launches you twice as far if you did it correctly.
It looks like you took a very long time making this so I guess I'll try it but it also looks like it will get boring very easily.