Welcome to NJ. Somerset county is nice, my son went to private school in the Gladstone area, it is still very 'horse' country-ish. It has access to route 78, which takes you to Newark, but in the morning that can be a rough commute, 78 often has tie ups on it (without heavy traffic from Somerset to Newark Airport would be about 35, 40 minutes). I would avoid Essex and Passaic counties, their property taxes are sky high. You may want to check out Morris County, from where I live it is a fairly quick trip via 24-78 to Newark airport and there are towns with decent taxes around where i live as well (I live not that far from locolawyer it seems).
Wish you luck, hope it all works out!