A.B.
Well, we had the biting issue with one of my step sons. My husband said "bite him back." I did not do it for the longest time, until it became a big issue, then i did it one day. No, I did not like doing it, but hey--he never bit again.
As for him climbing and getting into stuff--welcome to being a mother of BOYS!!!!! They are climbers and usually dont like to listen.
I know this is not much help, but you can email or IM me anytime if you would like
Take care and good luck