"Go For It!"
...and, welcome to Martial Talk!
Like others have mentioned, give it a try, but beware contract deals and other long-term plans. You'll discover quickly that there is a great depth to any martial art and you will find yourself in your free time thinking about what you have learned. Also, the exercise will be great for you and it will give you something to work for.
You've said your wife is on board with you training, but I wonder if maybe she would want to give it a try with you? My girlfriend and I both work a lot so training together has been helpful for us. Just a thought