Just to let you know Jovi's been exactly the same with the constant biting, and although Neo chewed loads he wasn't a hand, nose, hair, (etc) biter!!!
If I feel his teeth on me I shout 'Ouch' and then ignore him, although I haven't been putting him out of the room. Again like Rusty he's quite vocal and a growler, but I saw him from 1 week old and saw the dams temperment and so know that he wasn't badly bred.
Jovi is now 5 months, most of his teeth are now adult, he still bites but not so much and his growling at all and sundry (got quite upset when it was at me
) has reduced to almost never. He still occasionally curls his lip when I tell him off!!! Although I was worried at first about the growling, I soon came to realise he was just a different type of puppy to my Neo, and he is a bit more fearful. You could get a puppy kong and put fill it with salt-free stock and then freeze it he might appreciate the cold. Lots of cardboard especially boxes would also be great for chewing.
I think it's great to be able to pick a puppy up and cuddle but I haven't really done this with Jovi because of the biting. I pet him when he's on the floor but stop if he tries to bite me. It won't be a bad thing for him not to be picked up and cuddled, he'll get to know his place is on the ground, and it keeps him lower in the peeking order.. I know we all have different rules for letting dogs on furniture etc, but if you have a dominant dog and kids it might be best for him to remain off the furniture, not be allowed upstairs etc, so he's never in a superior position to the children.
It's still early days yet, Jovi is growing out of biting and I'm sure your Rusty will too.