Looking Awesome! That is a very light airframe.
I agree that the HS-55's are too fragile. I'd use HS-65HD's, HS-81's or the newer HS-82's.
Can't wait for the flight report. BTW, have you considered dope and Jap tissue? Or, maybe one of the traditional free flight coverings like Polyspan, Litespan or Airspan?
http://www.faimodelsupply.com/starline-polyspan.htm
http://www.peck-polymers.com/html/covering.asp
My Super Kaos Jr. is covered with dope and tissue.
David