I applied for some freelance

I applied for some freelance work a few days back on the basis that it would be a convenient way to earn some money while looking for work and / or writing some freelance journalism. The job I applied for was supposed to be three or four weeks, three or four days a week. I thought it would be a terribly convenient activity – not requiring too much intellectual or time commitment, and getting me over a difficult working period. I would still, in other words, have time for interviews, writing and preparing myself for whatever the job-to-come would be. However, now they want me to learn JSP, work five days a week for four weeks and organise myself as a ‘sole trader’ through a consultation with an accountant. Suddenly the whole prospect seems considerably less appealing. I don’t know what to do.