I would want to put limits (assuming it was legal to do so) in the lease about both subletting and roommates. You do not want 5 single airmen renting your place as roommates. If legal, include some kind of limit on houseguests.
Also, assuming your primary rental pool is military (and maybe it isn't) you can check the housing allowance for the area. (Google "BAH 2018 calculator. Enter the zip code of the base and then you can search different ranks--use the "with dependents" rate.) Most people want to spend either at or under BAH. For families that large, it is most likely going to be senior officers or senior enlisted, so I'd look at the BAH for an O-4 and an E-7. If the rent is way off from that, you might have trouble finding a military tenant. Also know that most military families don't stay in an area more than 2-3 years, sometimes less, and then can legally break a lease with 30 days notice and a set of orders. Again, not catastrophic, but something to keep in mind. (I assumed that because you mention the base, you were planning to target military families.)
However, most families that large are probably going to want a garage, especially in a place that gets winters, so I'd be afraid the place would be hard to rent to anyone but someone with a very large family desperate to find a place. And there's not anything inherently wrong with that, but it's a much smaller rental pool.
Of course, if you want to go the section 8 route, feel free. I did it and did not have a good experience, though it wasn't the worse. (Tenant just took bad care of the property so it needed a ton of cleaning and small repairs.)
