I always used to give Humphrey a kong filled with something to keep him occupied and distracted and that worked really well to start with, so I can't see any problem with the lamb neck, (presumably he's used to bones? if not I'd wait to see how he copes with them first). An old t-shirt of yours might also give him a bit of comfort, also a bit of background music can help. If he's over excited, I would also try and calm things down a bit before you put him in to rest and obviously make sure he's had a wee etc beforehand.
The crate issue is always a little controversial on here as there are some who are totally against them and others, like me, who feel that used sensibly, they're a safe haven for the dogs and a very useful commodity for us! Some people have them situated in a busy place and carry on doing things around them, personally this didn't work for us as Humphrey was always frightened of missing something, so I put it in a quiet corner where he could hear but not see me, - but that's a matter of choice, you have to see what works best for you.
How is he at night, does he sleep ok in there?