if it's the .60 the 100 would work but it is too much power for the .46 UCD. use stander servos on everything but the rudder. use a high toque for the rudder
i use 5 hitec 425-bbs and 1 475-bb servos

the plane will float for every but does stall

it's easy to build, 1 day

and if you put the 100 on it never-ever fly full throttle unless you're pointed strate up

there's 12 UCDs at my field and all or us love it

the landing gear is full proof but never have a rough landing or you will strip it off, the plane WILL LAND GENTLE BUT IF YOU DON'T IT WILL BE BOUNCE AND IF YOU LAND IT LIKE THAT ONE TO MANY YOU WILL STRIP IT

it you want it tail heavy you will have to add tail weight

and last have the best pilot help you with it