I think it would be overkill but that is probably preference. I have an OS 90FS in my big ucando and it is fine and pulls out of a hover. Doesn't rocket out of it but still has unlimited vertical
On the smaller one I'm not going to use over an OS 70FS. I think even my Saito 80 is overkill. YS 63 is probably a great choice but hard to find one available. This plane should come in between 5-5.5 lbs.