Hitec has specified 475hb to plans up to 8 lbs.

I bought a second-hand 2m pattern plane. It does have Hitec 77 BB on ailerons and to dual elevators. It is not the best but it is working. To the rudder it is a 645 MG. The gearbox on the 645 MG has very big free play after 200 flights. I will change that servo to a JR 8411sa.