Yeah, I would wait too. Who knows, maybe if you do wait, a better animal will become available at that later date. Maybe kinda like "fate."

I would suggest buying frrom a breeder though. I have had 2 B{s that were from petco (though I never actually purchased them, they were "freebies." Ashes, my '03 male is from there, and he was pretty hard to establish and get feeding. He had to be dewormed and actually had mites when I received him.
A breeder might run you $30 more dollars, but in my opinion it's well worth it, especially when you buy from a reputable breeder who will not risk his following by selling you an inferior animal.