Glow IS different from electric. You'll be surprised by the increase in speed and performance. (Although the Wattage 300 is a pretty agile airplane.)

I'm hoping that you're going to be flying glow at a club field. If so, go hang out and ask if they might be willing to give you a quick flight on a Buddy Box. (Most clubs have the ability, or someone there will.)

I don't know your level of skill with these things, so I can't really advize you on the U-Can-Do, but I will tell you it would be a handful for someone who isn't farily skilled. You can take it from there.

Good luck, and welcome to the dark side!
Dennis-