To freelance or not to freelance

I ask myself again if I have the fortitude to be constantly on the job market. I just received promising news on a freelance draping/costumer position near Boston. But freelance i.e. I'd be employed for the months of October and March. Housing provided...otherwise I wouldn't consider a job so short term unless it were in the city I was more permanently located in. But that means I'd be on the hunt again for the times between. To not be tied down. To be free to pursue designs with several other theatres...but also to not have a steady income. Potentially in a very pricey city. If only places who were looking to hire would all contact me. I don't mind the hunt. I don't mind the interviews. It's the waiting game that makes me nervous...deciding if I should pass up a sure thing in case a more ideal position comes along. I hate leaving potential employers hanging. Let's wait and see what the beginning of next week may bring.