Perhaps, you have answered your own question. If management of your websites isnt your favorite activity, then hire somebody to deal with it. As for the daily 15, write up the next 15-30 days of stuff before hand. For your blog, you can write up some stuff beforehand that you post on days that you "lack creativity."

Whats most important about work is that you have to enjoy it. If your passion is to start new projects, then by all means start them (but I would suggest adding just one project at a time). You never know what you will be able to accomplish without trying.

David