Tenant screening for home hacking

[Angela K.]

We (a couple) are planning to live in a 4 bed, 3bath and renting out the 3 other bedrooms.  We want advice on tenant screening, as well as if it is a smart idea to let one of the rooms be occupied by another couple.  The driveway is not large enough to accomodate 6 cars, and the common areas may not support that many people either.