If I were you I'd go with a Park 400 Outrunner at 920 Kv, or perhaps the Park 370 outrunner at 1360 Kv, although the 400 would be a little more comfortable. I'd pair either with an E-Flite 20 amp, but if you really want to go castle, then I'd say the Thunderbird 18 should suffice, unless you want to go with the phoenix 25, which would be a little bit overkill, but hey. Throw in a Thunder Power 1320 mah 3S and I'd say you got a killer set up. In fact, I kinda want one of those planes, let me know how it flies. Also, does it really fit in a suitcase, I'd love to have one for vacations!