RE: What glue for sheeting???
I use either Elmer's Carpenters Glue or Tite Bond II for almost all my building. Aliphatic resin glues sand a lot better than CA will and give you time to work.
An HS-81 will work, even an HS-55 will work fine for the throttle servo since there is no real torque required to rotate the throttle barrel.
Hogflyer