I had extra high torque high speed servos I put in mine. I've seen plenty with standard servos in them and they have no problems.
Only thing I would caution about is the stock push rods. They are not the best, they work, but there are much better ways of doing it.
I put my servos for the rudder/elevator in the tail and could use shourt 4-40 rods. Do a search as there are many other ways of doing that, and 100's of other modifications for this plane.
Even if you do no modding at all, it should still be a good plane!!