3 days is doable, but requires some luck. Here's how I did it: 1st day - buy max height and then width and band. Make at least $1000 or restart. 2nd day - buy the top radar and put the rest into fuel. HAve another good day - aim for pink landers and gold as much as you can. 3rd day - buy top fuel sucker as much fuel as you can, and full emergency rockets if you can (emergency rockets are less important). Then just maneuver your way up from platform to platform as best you can ... use emergency rockets if you start dropping too fast and don't have a platform to hit. Should be pretty easy.
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