Any Multi Family Pro's willing to help a Newbie Out?

[Kyle Patrick]

I don't want to make this very long, so I will try to bullet this to keep it short.

-Newbie in Washington D.C. inspired by the idea of using an FHA loan to purchase multi-family while living in a unit.

-Found a 4 unit (each 1bed 1 bath) close to a metro stop in a pretty decent neighborhood

-3 units rented at market rate = $4,825

-units renovated in 2008

-Asking Price $999,999

-Taxes $4,184 a year

-FHA limit for fourplex in DC is $1.2 million

-Been on MLS for 90 days (according to zillow)

Question: Tried using the analysis tool but there are definetely numbers I have no idea. Any advice on how to do due diligence to ensure I am doing all I can to see if it's a deal?

I appreciate any and all feed back and thanks in advance!!