1) You aren't debt free if you have a car payment.
2) My advice would be to wait for 1 year after you are married before you by a house...gives you both time to figure out what you really like, and exactly where you want to live. But...
3) ...if you're going to buy a house, you really need to get past thinking you're debt free when you have a car payment...can't emphasize that enough. Then, you need to decide if and when you're having children and if and when one of you will stay home with them and for how long. This makes a BIG difference in what I would say to you.
If no kids in future, with $82,000 base right now and interest rates still around 5% for a 30 year mortgage, you could likely handle a $200,000 loan, but you really should do the math. You should PLAN to spend no more than about 25% of your take home pay on the mortgage. If you continue to invest as you are (which is GREAT) then your take home pay is lessened. If you two are still young and don't plan to have kids, $200,000 is easily handled.
If you are having kids in the next 3 years or so, then you really need to base this house on your income only UNLESS you can take 100% of her income over the next 3 years and throw it at the house. Again, it's all about math. The target is 25% of your take home pay going toward the mortgage. You could decide to invest LESS for a few years if you really want a certain house, but then plan to make more income with raises or different jobs so that you can eventually invest at the level you currently are.
If by Marysville, you mean Marysville, OH, then you've picked a nice small town. I'm in and around Marysville frequently.
Honestly, (you didn't say how old you are, but I'm assuming not too old) young couples starting out making $82,000 and potentially more than that can just KILL it with regard to winning financially. I have a friend who makes about $55,000 and he's getting married in summer 2011 to a newish public school teacher, and their combined income is going to be about $91,000. Their plan is to save $40,000 a year and in 4 years just flat out buy a $160,000 house (or put down a HUGE downpayment on one slightly more expensive one). They can easily do this. You could do it too...however, you could actually get the loan and just throw money at the mortgage to get it gone...my buddy just doesn't like loans of any kind.
Good luck!