RE: 35% J-tech Extra Build
Bob,
Solid foam wings can take lots of abuse. Most foam wings use additional spars. some glass plus your leading and trailing edges add strength. There usually is very little weight difference in construction betwee ribbed and solid foam. Rib wings need additional support such as sheer webs and heavier spars. If done right both builds are extremely good.
As for the rudder you could modify it to use a pin goinf from the top of the rudder throught the hinges. The pain would be disconnecting the controls.
Al
JTEC/RADIOWAVE