Needing a little advice

I have recently interviewed for a job titled "Regional RN." Besides chart audits and maintaining license verifications for LVN's and the doctors being used, I would be supervising 8-10 LVN's taking care of 78 patients in 13 homes (avg. 6 patients per home). I've been given an estimated salary of 45K/year, does that seem a little low? I was also told that the insurance for my family will cost 2 times what I am paying now (working in the hospital). Can anyone give me an estimate/average salary for this type of work in the great state of Texas?
I've been an RN for 3 1/2 years (ADN), Just received my BSN in December of 2006.