I went to Embry Riddle Aeronautical University in Daytona Beach back in the early 80s. I had a Quicksilver MX. I logged about 150 hours in it before I sold it. What you’re looking into is miles ahead of what I had. Like Twitch said, about 1500.00 got me mine.

First off. Congratulations on wanting to fly. You’re about to be bit by a bug!
But - Why a Challenger? Have you seen/flown the CGS Hawk? Others?

Yes, they do have FAA regulations. And plenty of them. Start at the FAA web page and start reading all the FAR/AIM info available. After you shell out the money is not the time to learn bad news about when/where/how/who can fly ultralights.

Have you got a good IP? Is that part of the cost? Seems you can get a C-II for around 17K. Why the 25K?
Trailer? Good idea. But then you can also get a Cessna 150/152 these days for less than 25K. Hope you’re not thinking this will let you fly without a license (?) It won’t. But it is without ramp and hangar fees.

If you’re for sure into the ultralight thing, fine. Just cover all the bases before the money starts flowing. Like someone else here said. It’s an expensive hobby.

As for advise - there’s plenty here, but I’ll stick to some basics. If you learn nothing else from these posts, try to remember this:

1. Take-offs are optional. Landings are mandatory.
2. A BRS (ballistic recovery system) is a must have item. Don’t leave the ground without one installed.
3. Take-offs are optional. Landings are mandatory.
4. Overhead propellers means high center of thrust. High center of thrust means the nose goes UP when the power is cut (unlike your traditional fixed wing aircraft). Nose up on a power cut means a good chance for a stall when you think you’re low enough to cut power and land. That means broken bones and bloodshed.
5. Take-offs are optional. Landings are mandatory.
6. Don’t skimp on anything. Anything over 15’ and 5mph is a bad time to learn you shouldn’t have gone with the cheap fuel filter, etc.
7. Long sleeves are a must. No matter how hot it is out, windburn sucks worse. (I think you’ll have a windscreen though on the C-II)
8. Did I mention: Take-offs are optional. Landings are mandatory.

Is this Mr. Morrison guy from the DFW area? I think I owe his son a ride in the 675.

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1980 300D - Veggie Burner !