Here's my another version - I built it loooong time ago, but hence I wasn't using forum for some time I didn't share - but here it is + some word of advice. I oversized it to 120% - still small (about MM mustang size) but much more stable. Battery is pushed in the very back under the wing - there's just enough space to fit 3s 1100mAh lipo, balances great with 2204 motor. Aileron servo as usual, but elevator servo is pushed to the back and it's mounted vertically inside fuse through wing, horn above wing. I also cut a small hatch above it for adjustments. The plane was flying flawlessly, but hence there was no spar, aside for this little slim foamboard one, the wing broke in the middle when going out of fast dive - I strongly recommend putting in a CF spar, doesn't have to be long, doesn't have to be thick, but if it's here and it's glued to foamboard spar/former it'll make the wing almost indestructible. Even a barbecue skewer will be better than nothing. Oh and don't use poor quality props - they draw more current, vibrate and are louder than better ones. I also think that it'd be a good idea to strenghten tail section somehow.
Plane ended up eventually as glider for my nephews