I have never built a Morris profile before, so can't comment on the Top Cap, but I feel the Sledge was a pretty dang easy to build plane. I would hate to build it (or from what I gather about Morris planes in general, any Morris profile) without my trusty disk/belt sander combo. There are about a jillion miter joints in it, and I can whip them out fast with the disk sander. I can't imagine building it without a disk sander, good joints are an obsession with me.. My $.02.

I have just finished the airframe on mine, hope to get it covered soon. I'm going with a 4 stroke..I am going in a completely opposite direction than what is normal for me, I have never powered a fun fly plane with a 4 stroke before.