Question for all of you travel nurses

Hello all,

I need some advice...I have been an RN for the past 6 years, 4 years as a labor/delivery nurse and 2 years in the NICU, I have a full-time job in a LDRP, small community hospital, I was looking into doing some travel nursing (local at first) and landed an interview and essentially the job (contract), for a facility that I worked at about 4 years ago. I told the nurse manager that I was interested and now I am having second thoughts...this is a 13-week contract and who knows if they will renew or if I will find another job after the contract...I have three children and I need a stable income, so any advice from you will be greatly appreciated.

Oh, and I did accept does that mean I can't back out now???

Thanks,
Melissa