
Theres a lot of White(well cream/off white)GSDs in rescue You seem to want a lot things for dog bred for a visible breed fault
I wish you luck as there are so many people breeding "White"GSDs out there for their colour alone that the good things about GSDs are missing
This year alone one small GSD rescue has has over 100 unwanted "white"GSDs through their kennels, most needs lots of work to make them rehomable due to be being poorly bred
If you just want a pet why the good pedigree ? There are few "good lineage" "white"GSDs out there