Wow...he's got some really cool markings and pattern features. Definitely a very worthy dinker!
I think if he were mine, and I had my pick of females to pair him with...I'd go with a black pastel. I'm not saying he IS a black pastel...but he looks like he could be in that same group...like the lesser/mojave combo. It'd be interesting to see if paired with a black pastel would produce anything that looked like a super black pastel or something else totally new and wicked.