So far the cons i have found are owner occupancy/ primary residence mandated, 180 day resell rule and no DIY option which would cut cost and build sweat equity. 

For example I wanted to compare loan delinquency and occupancy rates between single family, multifamily, stocks, commodities and different commercial assets to see how multifamily has performed.

SFR ConsShared space with your tenants/roommatesOccupancy limits: each town and county has different occupancy limits.

Hi Tom,These areas you've mentioned all have Point of Sale and rental registration/occupancy licensing requirements that can be pretty tricky to navigate (and will often require a lot of cash up front to be held into escrow/pay for repairs).  

This determines your current DTI because its expenses per month / over monthly income = DTI- Are those duplexes non owner occupied (investment occupancies) ?

Looking at comparable properties sold in the area, occupancy rates, and cash-on-cash returns can help.

Seasonality is the higher and lower ADR and occupancy periods. 

While simultaneously acquiring another FHA after my minimum 1 year occupancy is satisfied and repeating the process.

Occupancy rates are also excellent with this strategy but in most months you do make a more on a short term rental at the expense of more time for managing it.

Smoking: Smoking by Tenant, Tenant’s guests, family, or occupants ☐is permitted X not permitted in the Unit or Property (including, but not limited to, the garage or outdoor areas of the Property).