Opportunity Costs

I just got out of a job interview for a 8-week position through a staffing agency that pays $10 an hour (low for the skill level they wanted) but would possibly give me more design experience. In my pocket, I had a voicemail waiting from another staffing agency about a $14 an hour, 6-month position that would have me working in Marketing Communications, specifically social media, with a "large, well-known nonprofit." Neither offers any benefits or promises of extensions. I'm still waiting to hear back from the actual jobs that I applied directly to, full time permanent positions with benefits and salaries. I'm about to lose my fucking mind with all these choices, except none of them are actual offers yet. The only definite thing I have going on is the catering work I have scheduled for the month, which will pay my rent and bills. Do I say F it to these temporary positions? Do I accept the first position that offers, then quit if another one offers? Do I focus on the permanent positions? Do I start drinking now, or should I just overeat? Actually, I think I'm going to call a psychiatrist and make an appointment because I am legit having anxiety and drugs medicine are the best solution probably. Until I get addicted to them. I keep flashing back to my Into to Business class from sophomore year of high school, or maybe it was my Econ 101 class at the Florida College I went to, discussions of opportunity costs and making the best decision. I wish I could make ANY decision right now.