Moving the mains back will affect the aircraft's rotation as it lifts off. The location of the mains is specifically designed point. Moving the front gear back will affect ground pitch stability (increase chances of nose over). Wire gear is designed to resist axial loads. Bending the gear forward will increase any likely bent gear issues
I think the right thing to do is build a motor box with a place to mount the nose gear. I'm sure there are other ways that might work too. Its up to you if you want to experiment. I'm tired of experiments, I just want to fly planes
