Beside the excellent replies you have received already, the one consideration I thought of is the problem of his size. Here's the thing...these little dogs have more health risks delivering pups, right? Ideally, I have heard it to be wise to breed a smaller male witht the bitch to increase the chances of smaller pups (not adult wt, but pups), so she will hopefully have an easier time delivering.
This is what concerns me about studding your boy out (besides the "business" of it). I have always thought it was best to breed males on the smaller side to make it easier on the bitch. I'd hate to see the breeding female have to deliver larger pups because of the male's size.
This breeding stuff is worrysome! Geeze!
__________________ Kathy,  Trixie,  Barkley, and  Rascal 
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