First off, welcome to Colorado!!!
As for other tax shelters, I was thinking Roth IRA too but you're right about income limits, tops out for singles at $129k (phased out if you're over $114k). Fortunately you could do a "Backdoor IRA"
http://www.bogleheads.org/wiki/Backdoor_Roth_IRA The gist is you create an IRA with after tax dollars. Because you are above the income limits for any type of IRA, this IRA becomes a "non-deductible" IRA, i.e. one you would have to pay taxes on. But, you can instantly (within a couple days) "Rollover" this IRA into a Roth IRA. Then you get all the benefits of the Roth.
At 230k in income though, are you self employed? If you're self employed, your "employer" can contribute to your 401k as well up to a max total of $51k for your and employer contributions.
There are some tax optimizations you could probably make too. One is to load all charitable giving and property taxes for multiple years into one year (pay property taxes and do gifts for 2013 in January 2014 and for 2014 in December 2014).