Would be nice if things where compatible with each other. I missed the that fact the cub is all ready setup with the spectrum RX so it wouldn't work. One reason why I won't buy their planes wish they would just do a airframe only they do have some great looking planes.
By the way I have 2 of those orange RX's been a year and they are still working great.
Good luck teaching the grand kids that will be a fun time for all of you.