With $10k, you're probably going to get the snot beat out of you. OF course, it may look like you are making money, but you'll probably be less than the mrkt avg, especially once you consider your trading costs. You can make money at it, but it eats up a lot of time. Otherwise, blackjack in vegas is just under 50% odds, so you would probably be just as well off there.
If you had $10k, you would be better served to top off your 401k accounts. Understand, we all have different goals and what not, so this is just general advice, but it may not be "good" advice for you.
I know you didn't ask this, but I would think long and hard about continuing contributions to the 529 account. There are many other paths to financing a college education that are not available for your retirement.
Finally, I will leave you with the '96 Chairman's letter to the Berkshire Hathaway where Buffet himself said the following:
Most investors, both institutional and individual, will find that the best way to own common stocks is through an index fund that charges minimal fees. Those following this path are sure to beat the net results (after fees and expenses) delivered by the great majority of investment professionals.http://www.berkshirehathaway.com/1996ar/1996.html