I would recommend that you get an attorney in order to make sure everything is done right so that she cannot take you back to court in a few years if things should change. If it's not addressed in your initial divorce paperwork, she can take you back to court since you left that door opened.
Make it very clear to your attorney that you're not trying to wage holy war on the wife, but looking for legal advice to protect yourself now, and into the future. This is very important, especially if you have a pension(s) now or in the near future and 401K/TSP account(s).
I just went through a divorce a few months ago and in my case, it was pretty simple and painless. My attorney didn't cost me an arm and a leg... Less than $3Ks. In my case, I have a current pension and will have an Army Reserve pension in a few more years once I turn 60. Also, a small pension from my current employer, as well as two TSP/401K accounts.
Besides finding a lawyer, the only other thing I can advise you to do is to keep her freaking happy... Regardless of what other people, friends or family might say. If she declares war on you, the divorce process will severely suck gorilla dick. I told my ex that if she doesn't declare war me, I would not declare war on her either. "AND" I also put a realistic offer on the table... "AND" told her that the offer will start immediately AFTER she signs the papers and before the actual date of divorce to make it more attractive. Whatever you do, do not be a cheap-ass since she knows everything about you and your finances. In my case, I got off the hook with very little pain by offering a realistic payment, which saved me so much money in the long run since I basically kept everything and didn't have to pay my attorney all that much... Basically, all he did was to write up the agreement and present it to the court for their blessing... Lincoln County... Whatever you do, stay away from King County when filing the divorce paperwork!!
Again, do everything you can to keep her happy and if she tries to start a fights, walk away!! It's not worth losing 50% of YOUR stuff!!
Btw, I was married 29.5 years.