Should I do it?

Hello,

I am currently in school for LVN (step 1 of...a million before CNMW), and our instructor told us we can sit for the CNA exam (I'm in Texas) after we finish this semester. Now, I'm an RMA, and I have a job working in a clinic, but it's a new clinic and business is slow. My question is, should I sit for the exam "just in case" (it's EASY for a CNA to get jobs here, and near impossible for a MA), or just stick with what I've got until I graduate in 2010? I know the job is hard, but it would pay well and I'm currently the sole provider for my family thanks to a certain national cable company being stupid (layoffs due to bad planning) and the economy sucking (no jobs for my husband).

Thanks!