I've got a youngster who was from the same kinda back ground. He was only young so it it didn't take long for him to come around, I spent time on the bond with him. I have been very lucky that he bonded with he very really from the first time he came off the trailer. I spent hours in with him, mucking out around him, reading books (re-reading them), singing songs. I left the radio on alot so there was always some kind of noise going on around him. I didn't touch or groom him for a few days, I found that when he was looked after but left to figure out "what the strange woman" was doing he willing came to me.
With the head collar, i'd make it a very positive thing so be confident and if you put it on before you feed him that way its not a bad thing that he will want to fight.
Start of with little bites that way you won't flood him, but remember at point if your not in control he will see it as a way of reacting that's reasonable reaction.
Good luck, I know I've now got a youngster who grounded, very sweet and is happy and willing to learn new things.