Knives for processing I'd look at
Cutco brand. You'll spend over $100 per knife, but they'll last you a lifetime and then some. You'll use them for more than just game processing. You just need to get the Butcher, Boning, Fillet knives, and a good steel to break down any game animal.
I have a friend who runs his own processing locker plant. He just uses commercial grade knives from a
butcher supplier. However, he goes through a few knives every year as he usually has more work than he can handle.
However, if Cutco is still to expensive, you can always buy an
Outdoor Edge game processing kit.
I can't help you with suspenders.