I have a hard time thinking about taking the plunge without any marginal success doing things part-time. I pretty much hate my job now, but I need to pay the re

I have a hard time thinking about taking the plunge without any marginal success doing things part-time. I pretty much hate my job now, but I need to pay the rent which is kind of expensive since I live alone and the lease doesn’t expire for 7 more months. Right now I'm trying to work on building alternative sources of income that could help sustain me partially when I quit my job. This includes Ad revenues, flipping simple websites, and iPhone apps. Meanwhile I am trying to build on some ideas I have for SAAS businesses. I'm going to pick the best one and implement it quickly and cheaply then see how much traction it gets. If I saw at least some interest from consumers/clients in a product/service that I built part-time I would quit my job pretty quick.