I did a rehab job on my old Midwest Sweet Stick last year..
This re-build thread shows how I converted it to dual in-wing servos and tail dragger.
http://www.rcuniverse.com/forum/m_59..._1/key_/tm.htm
It was built with 0° dihedral
Don't fear the dual servo flap option.. setup is dead simple. It'll land at a crawl and roll to a stop in 5-10 feet.
I still fly it with it's original OS .45 FSR.. I think it could use a little more motor