I needed more weigh at the nose with the Saito 180 in my old Extra because I used two elevator servos at the back of the fuse. I was thinking to use a Saito 150 on the new one; actually, I almost never run at full throttle the Saito 180, just once in a while for a blast of power or to show a little bit off
. I think the 150 will give you more flying time and enough power. I also enlarged the ailerons in my old Extra and in this one. I made them very close to the fuse.