RE: wing servos for SSE
Don't think it's a good idea with 81 MG. SSE is a funfly/3D and micro servo on it - no-no. SSE is not a park flier. It needs HS225MG at least. Don't fool yourself with MG gears, they are not too strong anyway on micro servos.
As for me I am going by now with Saito 82 and hitec 5975 digitals (bought them on sale) on my SSE.
If you need a plane like SSE but fragile and very light go with Magic Extra.