For the $25.000 budget you buy H.I.G.H. tech glider, the plank mark II and Cruise missile. Max fuel, 4 ramp hight and 1 in length. And the strategy is that you want to get as high as possible, so when you start you try to keep going as long as possible without using you missile, and when you cant keep going anymore you use it and go as far up in the air as you can wwith and average speed of 200. you should get up to 700 or so. then you run with a -1 resist, and when you reach below 50 speed you dive to get little above 200, not getting into the red zone and then go with -1 resist untill go reach little below 50 again. Keep doing that and you will make it, I got 19K points so you dont need to make this perfect to get the achivement.
Made the $1000 budget one.
You want to buy the cheapest and the best items you can get. So get the umbrella, the sugar rocket and the plank. Upgrade fuel 4 steps and 2 on length and height. If you have done what I just wrote you should have 10$ left. Use the ramp angler to get the ramp more straight, but not fully. Then try to have -1 resist with a speed of 20 at all time, so tap spacebar a little but a lot, you dont wanna go to much over 20, and when you get really close to the ground you goto resist 0, still at speed 20, and just switch to resist 1 and 0 untill you're out of foul. Guaranteed success!