i just built my first fomie, it weighs about 12oz with an 8 cell, about 150 inches on wing area, it is powered bo a edf 55 150, uses 2 submicro servos with elevon mixing, micro reciever, is this park flier too heavy for the power system, or is it gonna fly like a brick until i get lithiums for it ( not planning on getting them if i dont have to). any suggestions?