Based on what you said, and this is with all due respect, DO NOT OWN A DOG
There are animal shelter who do full days for people to come and visit / play with the dogs and help out (i highly recommend this to anyone for a multitude of reasons).
More so, the money you have in mind spending on the boarding, the vets, the extra stuff etc. could go to many dogs in said shelter if you really want to make a dog's life better and actually both your wife and yourself love dogs
Here's a link to one of the shelters that was struggling not too long ago but are hanging around.
https://www.instagram.com/givemeapaw/
These guys do shelter days every now and then.