Keep it light and you'll enjoy it. 13lbs is heavy for the MVVS1.6 and Bisson muffler. I would not recommend it without tuned pipe in aerobatic plane to get descent performances. With the tuned pipe on the MVVS1.6, you will get over 8000RPM with a Menz S 18x8.

I have found the best MVVS1.6-aerobatic plane combo is the 2m Funtana pro. That plane has already a tunel to fit the pipe under the fuse. You can do 3D all day long with 1.5 thrust/weight ratio.
My extra 300 has a MK bellcrank on the elevator, so, only one JR8411 instead of two servos. !!

http://www.rcuniverse.com/forum/m_15...tm.htm#1564028
http://www.desertaircraft.com/
http://www.emhw.de/