All will be fine, deep breaths. The crate is a great tool, it will give you a break from watching your pup every minute, you need some rest. He is just a baby right, so every thing goes in the mouth, try to remove what ever you can for now so your stuff is safe. Remember, every thing is so new and exciting for him, after some time most of this stuff will not be so facinating to him. Also, if you can close all doors to most rooms he does not need to be in and baby gate areas so he has less room to roam.
Enjoy, he is going to be a great friend.