Decisions, decisions

So I've been offered the job. Do I want it? I want the actual job yes, however since it's 3 months to start with with the possibility of being given notice at any time during those months and I have to move to Poole and that makes me not so sure. On the other hand it's something I want to work with and I am afraid that if I do not take it it will bite me in the behind. Oh bother.