Personally, if I were looking at Lab breeders, I'd want to see more than just good hip scoring parents, I'd want at least one parent to have been elbow scored(although it isn't a heavily used scheme, there are plenty that do this as well as hips

) this is fast becoming more of a problem in my view than hips at the moment, and I also would want one parent to be at least Optigen tested clear of GPRA alongside the general yearly eye certificate which both parents should have.
As well as the above, I'd be looking at what the parents have achieved, whether that be show awards or working awards, depending on what your fancy is

, bearing in mind that the Show breeders generally have broader heavier dogs than the Breeders who like to work their dogs.......although some manage both

Obviously, there are some "hobby" breeders who will fit your requirements nicely too
If you need ANY help, feel free to pm me