I had both, the kit is lighter and flys better, it will be better as well, if you build the rudder at least 1" bigger and increase the "V· in the elevator and build it 1/2 " bigger to compensate for the bigger cut of the "V".

with a FX .46, a 12x4 or 12.25x3.75 and the cg on the tail heavy side, you will be able to do knife edge and beautiful blenders and sort of inverted flat spins, the only con is that on windy days it will be harder to land but it is worth the changes!

happy new yeaa!