Nice work. Looking at the rear aspect of this design makes me want to put a shuttle bay door on it. As for deflectors, May be a Buzzard ramjet concept may work or a modern fighter intake from an F14 etc. There could be a way of combining the two ideas in to one concept.
http://en.wikipedia.org/wiki/Bussard_ramjet
Here's a wiki link to the 1960's concept. It may give you an idea or two.
