It's totally fine to inbreed that wide range of mixes. It only matters when trying to breed a single breed for more than a generation.

I do line breed because I want to keep my birds pure. I started out with a quad and built my flock up from that. I usually breed father to daughters and mothers with sons. I have had a few odd ones like a crossed beak but things like that can show up every once in a great while.
This is Gladys a crossed beak. Usually I cull any misfits as chicks. I will never use Gladys as a breeder, she is a pet.