I suppose if you use something like a .50 twostroke, with a big 3 pitch prop, you'd have unlimited vertical. I run a 12X6 on mine, and it has ground clearance for the prop.

Yes, if you've had experience adjusting spark ignited engine carburetors, that counts. You will need to provide adjustment capability for whatever glow engine you use, both for the big needle and the low speed needle.

If you've had experience taking off & landing low wing taildraggers, and you start gently with the Ultimate 30, you'll be okay. If you haven't had practice with taildraggers, you'll probably want to practice with something else. Rudder use is essential during takeoff. Also, when taking off, I recommend you not pull the nose up unless you're at flying speed - and then only a shallow climb. It is possible to yank this thing right off the ground, but once airborn it needs to be at flying speed - or it will snap.

Good luck,
Dave Olson