What a lovely cross. Well done for taking on a dog in need of a home, and one with physical issues too, that's great of you,
The shedding, or "blowing" as it gets called in the Malamute / Husky circles, really does take some getting used to. Depending on the top coat length, it can be an absolute nightmare, or something you can get used to.
A good grooming with a long toothed comb really helps when the undercoat loosens up.
Or do what I do with mine, wait til it gets really bad and loose and take them to The Groom Room in Pets at Home in Sydenham lol
The breeds are known for being free spirited, so can be a handful to train with good obedience, hopefully the GSD side of the mix will help you there.
Anyway, lovely to e-meet you. And if I can help in any way just let me know.