Hi!
It's .40 size plane!!!
Use a .52 four stroke or a .40-.46 two stroke! No more!!!
I would use Hs 225 servos on aileron and elevator and Hs 80, 81, or 85 on throttle and side rudder. But standard servos like Futaba 3003, 3001 or Hs 300 or 425 will do too. But remember low weight is essential as usual if you want good performance!