Well, 99.9% of the time, everyone including me will tell you: NEVER breed a pastel that brown to try for a bumblebee or anything like that, because he will kill the yellow you look for in bees and such.
BUT, those weird sides he's got.... man I'd be so very tempted to breed him to a spider just to see if he made the spider high white sides even better.
I understand your dilemma, and you probably should pass on him. Just....those sides! I would love to find out if he passed them on.
Gale