I am getting steady income from signature campaign and full time job and I am very much satisfied with what I am earning as if I am short of cash at the end of the month then I have bitcoins in the form of back up to take care of my expenses but generally I don't prefer to sell them and save them for future.
You have the right strategy. The source of permanent income should not be one. Best of all, when there are several. And it is very good, if this income will be delivered to you without significant effort and time investment