Totally agree. How wonderful you are willing and able to keep him and give him a safe home with your other 'whiskers'.
You are wonderful people for saving this sweet boy and giving him a loving home.
Sounds like a great vet you managed to get him along to, some can be really kind when they know an animal is a rescue. All fingers and toes crossed here now that with the treatment he has had for parasites, the wounds he has had
I guess time will tell with the nerve for his front limb - hopefully you are right and not fully severed so he can make further recovery there and not have to go through surgery.