House hacking is a great way to get started and it's even an option at any point in your life (take it from me - life happens!) You don't necessarily need a multi-family property to house hack, particularly in your situation. Some people absolutely don't want others in their personal home, but if that's not an issue for you you could also consider renting out your primary as an MTR when you and your wife are traveling. That's what I'm doing with mine now. I have a primary home in CA, but I'm traveling for the next couple of months so I'm renting it out. It takes a little work to move your personal belongings out (paperwork, photos, special items), but it's worth it to have someone covering my mortgage and then some while I travel. In my case, I have a 4/2. I've put all my belongings in one of the bedrooms, locked it up, and rent the house out as a 3/2. It's working out great. Just something for you to consider if MF is more than you can bite off to begin with. Good luck to you!