RE: choosing second plane
Cant go wrong with a Stick type plane.
And the "ugliness" (pun intended...lol) wears off after you see how much fun they are!
Id go with a 60 size one and somewhere around a 90-100 2 stroke to get the most adrenaline rush.
I have the ultra in 60 with an ASP 61 2 stroke. The 61 flies it well...but just doesnt have the "pucker factor" that Ive seen with some of them with a larger engine.
Ive even seen a few folks put DLE 20's on them with great success. Cant really say how a 20 gasser compares to say an EVO 100 or something similar.
A guy in our club has one with EVO 100 on it and its crazy fast and nimble!