i'm glad that the plane arrived in good shape. that's always a relief. anyway, i've never seen a cub fly on electrics (other than park flyers, of which i have a WM Clipped Wing Cub). i'm sure that it will make for a good flyer. as for servos in the back, i'd assemble it first then put all the parts in place before deciding where to put the stab servos. with such a short nose and going electric, you might end up adding a lot of nose weight to get it to balance.

and, since it does have that magnetic tray, use the mini servos, and is built light (windows look like they are covering) it's safe to say that this was built for electric.

good luck!