The FT X-29 can use either a propeller or an EDF, and it can fly relatively slow, but you would need a fairly powerful motor. The minimum is a 60 mm EDF but I would highly recommend a 70 mm EDF if you want to eventually fly fast. I have not flown one with a propeller so I don't know if the C pack is enough for fast flight. The X-29 has a lot of parts but it's simple to build. It just takes a long time.