Aw. Personally I think the Wyllop fits his name perfectly (: I wouldn't change him, but I guess it's up to you.

What kind of ideas do you have for him personality-wise ?

I'd make Booker female and a Cream Torrey. I'd also probably get an overlay with a book in it's hands paws and red glasses (YES, RED).

But that's just me..

Aw. I couldn't think of a better color than the wyllop then (: they look kind of timid and a little awkward, though it has a smile on it's face. I'd definitely keep him the way he is.