I always prefer owning your primary residence over renting; however, you need to consider the cost. 

I just bought a primary residence on a 15 year note so my DTI is a little high.

I know a lot of people have used FHA loans, but if you already have a home that is your primary residence, I assume this isn't an option?

But I know that the banks don't like me buying another primary residence and buying "down in square footage" Do you have any strategies on how I can go around this obstacle and still be able to buy the duplex, 3-plex or 4-plex with a FHA loan and live in one of the units?

I know a lot of people have used FHA loans to reduce the down payment size, but if I already have a home that is my primary residence I guess this is not an option?

As a possible solution, I located an online form submission site that allows me to create a custom form, to which I can provide a link in my advertisement.

Just think about them on an individual basis...or even as pairs, where when there is a problem with one, it leads to one of the other "targets" as the solution.  

My husband and I just started investing in Multi family, our goal is to acquire 2-3 properties in the next 12 months.Meanwhile, I know there are many Chinese investors and new immigrants buying US properties as primary residence or investment .

Moved for job and bought second house in Georgia conventional 5% May 2017. incomeMy salary income is $80,000 California rent income $2,850Can I count the boarder income of my primary SFH residence right now ($3,200)?

As far as his experience goes he purchased his first house, years later built his second and now primary residence and has been renting out the first residence since using a property management company to do so.