Very nice work... they fly as good as they look too. I built 2 of them a few years back. If you haven't done it... I recomend "flying-wires" on the rear stabs(hor. and vert.). I lost the first one due to flutter of the rear horizontal stab. The only thing I can figure is that I did the same your doing in putting a .91four-stroke in mine.. which does create a bit more vibes then smaller engines.... and they are decently fast plane for having a larger frontal area. Sullivan makes a real nice kit I put on Extra#2..... which is still with me after 3yrs.... and flies great. I used these smaller planes to move up to larger scale Extra's, and it was a successful transition... it was just a few steps up to my 27%scale Extra..
The first pic(red/white) is the GreatPlanes(same as yours)... the second pic(which I included just for a scheme idea for you.. is the Midwest 27% Extra....