cool! I know what you mean about the armour at the front, I've left it off mine too, you might want to give it some head lights, and perhaps give the rider a weapon to make up for the bolters that you will lose off front. ps Is this Santa's bike?
Actually I still put the twin linked bolters on the handle bars, just cut the ammo packs on em to be flat at the bottom. Right now the Sarge riding this one has a Plasma Pistol, but I'm reconsidering what to give him for a later time.