My Stinger will be flown with a Thunder Tiger Pro 40.

It has 1/16" sheeting on top and bottom. There are also carbon fiber strips to reinforce the wing. It also has a carbon fiber vertical sheer (spar) on top of the wing.

My AJ-2 has similar construction and has held up fine with a Q-40 short stroke motor.

I wouldn't put a long stroke Q-40 in a Stinger without carbon in the fuselage. Newer fuselages will come with carbon.

No - I am not ready for the Nats yet, but maybe next year.