When Bella was little we had potty time and play time outstide. I would take her out to play and if she pottied great. during out potty time I would tell her go potty and when she would potty i would say good potty girl!
then we came in for a treat.
Try not to make every trip outside just for potty time.
Also, if he is in his crate, take him out after awhile and straight out to potty.
Also do dogs really understand "timeout"? Has anyone ever dont it? do they understand? I guess i have never heard of anyone doing it. Doesnt mean it doesnt exist
Bella didnt "get IT" until she was about 10 months. YOU just have to be strong and consistant.
Also, I am curious about his name. lol maybe you should have called him sweet boy or tranquil..lol
I am not sure if i have any thing to offer on the biting. I dont have any experience with that. I started Bella very early with the cesar milan method of getting attention with noise. maybe could look into it.
Good luck