You've got a lot of things going right, and a lot of things going wrong.
Things going right:
--Lots of income
--Reading MMM
--Willing to cut spending
--Maxing out 401k, etc
--Living within your (enormous) means
Things you need to fix (some of this will sound repetitive):
--"Everything else"--when my wife and I started budgeting, this category was out of control. Understanding where this money goes is a good first step to fixing it.
--Food budget is too high
--A highlander!? A family of four, even with a 6'4" dad, will sit quite comfortably in a sedan that gets twice the MPG. If you need cargo space, you'll get just as much in a minivan.
--Spendypants house. Not only are you paying out the nose for mortgage, utilities, and maintenance, you're also paying....what, $12k+ in property taxes every year? You're probably spending about $60k/year on that home, including pool, taxes, PITI, utils, etc. If you're ok with spending twice as much on a house each month as MMM spends on his entire budget, that's fine, but just make sure you're counting the actual cost.
--Cable/phone/internet. Others have covered how to cut this down.
--With your income, and living in TX (yay no income tax!), you can afford to be much more aggressive in your FI plans.
What I'd do (ignoring the spending reductions above):
1) Get the mortgage below an 80% LTV, and refinance at 3% for 15 years. Not only is it your highest-interest loan, but you've got PMI to go with it. Paying down and refinancing will save you $10k per year just in interest.
2) Knock out student loans next. As others have said, that's a guaranteed 4.5% return.
3) Entertain the possibility of moving. If you could find a similar house for $250k (and having lived in TX, I know it's possible), you could boost your savings rate by a significant amount. Yes, you're in a dream house. But if you make the sacrifice now, you could *own* your dream house outright in 10 years, rather than finally paying it off 30 years from now.