FiveO

Takeoff's and landings with a park flyer are not the same. Takeoffs with a glow plane (read that as heavier) are much longer with some exceptions based on plane/engine combo and landings are just as long or longer

On average you need 50 -75 feet for the takeoff roll and at least the same for the landing if not more depending on conditions such as grass height/asphalt/wind/temperature. The Challenger probably only needs 10 -25 feet for both in high grass

Now the final decision is up to you. No one here will "judge" you as it seems you think the guys at the field will. All I'm saying is it's up to you and only you. What everyone else thinks should not matter but in the real world there are people that will judge based on what they can do/say/own. This is unfortunate but is a fact.

Good luck in whatever you decide. As I mentioned before, let us know how it is going with your training. We will not judge but we will offer advice and encouragement. The decision is always up to you.