It doesn't really take any special equipment to install two servos per wing. It can be programed with your radio or you can use "Y" harness and plug into one channel of the radio. Really not that hard to do. And...with this big of a wing (keep in mind, nobody has this much wing area in the 50 cc class) it probably needs the extra servo per wing.
Again, you don't need matchboxes or ANY special equipment to run a (4) servo wing set up. The manual states you can use 100oz-in metal gear servos as a minimum if you desire. Me? I'm use two 333oz servos in each wing. Should be overkill but I'll bet I love the response of this baby.
The manual states the weight will be 16lbs 0ozs with all the servos and the DA50. That is a very low weight and wing loading. About the only plane I've seen that is under that is the Extra and Edge from AirWild. Nobody else is under 16.5lbs. This should be a great flying plane.
Thanks
BArry