So, you want to launch more websites. But, you don’t know how you will have time to manage them. One idea: create sites around things that you already do. This makes those things part of your job.
For instance, you watch House religiously. Make that your job. Make watching House your job. Launch a House fan site.
You’re a huge Bad Boy Entertainment fan. You keep up to date on them and like writing about them. Why not start an unofficial fan blog?
Make things that you already do into websites. You’ll have more work, but it won’t be as much work and the work you have to do will seem easier.