Congratulations! You're done. You're not missing anything except maybe structuring your notice so you don't leave money on the table or cause yourself a hassle. You might already know about this stuff, but it bears repeating...
Bonus
Take a careful look at bonus dates. Because companies view bonuses as a retention tool, many won't pay out if you give notice, even if you've already "earned" the bonus (according to their policies) before your last day. Often, people give notice the day after a bonus hit their bank accounts, so they're sure not to lose it.
Health Insurance
If your family is currently on your health insurance, try to plan your last day so that you can seamlessly move from your insurance to your wife's. Which will probably take awhile to accomplish! You want to retire and still have a month (or two weeks, or whatever) of coverage. This may mean your last day is the 2nd or the 16th, etc. My family just do-si-do-ed with a couple of months of COBRA due to DH's job change, and it was a royal pain in the ass.
Retirement Accounts
Front-load if you can.
PTO
Unless it pays out, take it ALL before you give notice.
Come back and tell us how it goes!