LOL. Here is a message to nursing students or newer nurses, don't tell us that you are nursing students or newer nurses. If you do, you will be given a lecture about why you shouldn't consider this travel nursing til you have 2 years of exp and usually won't get your question answered (Or so I have noticed).While I do agree the more years the nurse the better, it is not impossible to start after 1 year and no matter where you are it is your license on line. I try to take a more friendly approach than motherly. If you don't want to get the lecture, don't tell us how new you are.
Now to answer your question. When I became a nurse I just new I wanted to go to Florida eventually (I am orginally from Illinois). When I got done, there was a friend of mine who really wanted to do travel nursing. After working in Illinois as an staff RN for 1 year I posted a resume on Monster for a position in St.louis. Suddenly all these travel companies started calling me and it sounded like fun. My first assignment was in a hospital right outside of STL. I loved it and I stayed for a year. Since you already know this is what you want to do when you get out of school I think it is a plus. While you are in school and doing clinicals, think about what kind of nursing you want to go in for the long term. If you have the time, try to work like per diem as a tech in that type of nursing while in school, it will give you an advantage and helps to make sure that is what you want ( so you don't waste time in your actual career in it if you don't like it). Or even a short summer internship can be a big helper. After you finish school then you have seen first hand what will be expected of you in the "Real World" and your 1st year will get started great.
Now everyone is different, but I started travel nursing after a year, but my speciality is ICU and that is where I worked right out of school. I had a ADN just like you and just finished my BSN. I have been traveling for 4 years now and have been just fine. If when you and your husband take your first assignment, try a medium sized facility (200 -500 beds). I find these are the best to start if you have only a year prior because the floating tends not to be in areas so different from your speciality, the staff tends to be more of a family, but the hospital still has technological advances so you get more experiences. If it is a real small hospital, you tend to float to everywhere because there are not as many nurses in each speciality. In a bigger facility, you get lost in the crowd and they do expect alot of you. I like all sizes of facilities, but I think if you a newer travel nurse the med. sized facilities are easier to start in. If this is what you want to do I think you will be fine because you will take the time to learn everything you can in that 1st year of working because you know it will be a challenge after that. And you will never know it anyway, you will just get wiser with time. LOL. Hope my babbling answers your question and helps you. Good luck to both of you!