I take full advantage of my flexibility. When the kids are off, I take the day off too. My wife's vacation days are limited & tracked, mine aren't, so I'm the first backup when daycare is closed. Not always the best for work, but I do really enjoy those days. Friday was a blast - I made breakfast for the kids, we hit the park, met my wife for lunch, I sped through some work while the kids napped, and then we had an encore park visit.
Looking back over your list of skills, you cover a lot of different technologies. I think it might be wise to pick something to be known for and run with it. Don't leave it up to your future customers to figure out what they can use you for because they will never figure it out.
