there are some people on here that kennel their dogs outside I let mine sleep in the house, I dont know if this make any difference to their behaviour once they are in - Id say if anything they should be more cautious as its not their sleeping environment.
Do be careful of how you let him interact with you, these early stages are essentail for building rules. Ive always had older dogs too and just got a new pup - the biting I find happens either when they are tired or when they are thinking they can get away with something. Make you space yours, (my last post didnt read that well so .... have a loot at what is yours, and have a look at what is his.) when your laying on the couch try to keep him off you but dont make it into a game, just be direct in everything you do - sort of like putting a knife back in its draw calm and usual.
Hell definitely protest to new rules though should take well to new training its just a matter of being consistent - within a week you should see definite results. Dont invite him to do things as an 'oh hes been good', keep with it and then after a few weeks let him do something