Correct me if I'm wrong but, I just realized something from another post today. If you power down your interest on steem power will grow faster than your power down of 1/104th per week. Therefore, you will keep the same amount of steem power but give your self steem every week. This can either be put back into steem power immediately or transferred to steem dollars.

I had about 380 steem power last week. This week I have 417. I had a little bit of curation and a small bit of an author reward but for the most part, this is just an increase from the interest I'm assuming. I hit power down and now I will transfer 3.99 steem power into steem every week for 2 years. If the value of steem power takes a drop, you can easily buy more instantly, if not just hold it as steem dollars until it does. It's easier to get out that way.