One classic that works rather well without a lot of modification is a Summit III. The reason is that it already has a suitable hatch in the form of a removable canopy. You can see it if you look closely at the side view photo.

I copied Doug's set up for his Conquest IV , although I used a Hyperion 4025-10 rather than a Scorpion. 5000mAH 6s. Mine ended up weighing 8 lbs. 7oz.with a painted fuselage and monokoted wings and stab.

I haven't flown it enough yet to be completely dialed in but a 13X9 APC seems to work well. I will try 12X11 and 12X12 when the snow melts up here on the frozen tundra .

Power and flight times are quite consistent with what I would normally fly with a good .61. If I use the same prop, my rpms are virtually identical to what a friend's OS Hanno .61 gets. Vertical is very good but not unlimited. I land at 7 minutes having used less than 4000mah. Current draw is around 64 amps.

The only thing I think I need to do is get higher C batteries. The ones I have get warmer than I like. Not excessive but I like them to stay very cool for long life. I was using Turnigy nanotech 24-50C , which are really just 25 C batteries.

Chuck