There is nothing wrong with mutts. There are a lot of people here that rescue them and love them.
But, I don't really like "breeders" making new mutts, there are a lot in the shelters.
Everybody thinks different, so there is nothing wrong with your pick.
Have you look in to OEBs? They look like bigger EBs(they could be from 50s to 100s, it depends of the breeder), and they are supposed to be more healthy than EBs. If that's what you are looking for?
I know some breeder by your area, do you want me to PM them to you?