Hi Alex7403,
Good point about the horizontal stab. I forgot to mention that I also added tri-stock to mine as well.
I built mine as a tail dragger for the same weight concerns. I think it looks better that way too.

N1EDM,
After flying mine for a couple of season, I experimented with cutting a bay from each wing and replacing the ailerons with larger ones. (I believe the originals were 1", and I went to 2".) It rolled better, and seemd to settle in for landings better. But I ended up selling my Midstar before I could really wring it out in it's new config.