It would be my bet that if you talk with the folks at Horizon they would put you together a package with micro or sub-micro servos and a 610M micro receiver. This would shave about three ounces off your plane and make it that much more flyable.

If Horizon won't do it for you try ChiefAircraft www.chiefaircraft.com I have some friends who have been very pleased with their support.

From what I can see, going from four standard servos to two micro servos could even save you a few bucks.