回複：To N.

FYI. as you're self-employed, you can put up to 44,000 to your personal 401K, according to an E*Trade flyer I just received today. In fact, you can put more money in 401K or IRA account than your hu*****and. You can save tax by doing so.
As to 529 plan, here has good information, http://www.savingforcollege.com/

Take care of yourself -- your son definitely needs a healthy and happy mom, not necessarily a rich mom ;-)