They'd charge me equal to or a slightly-higher interest rate than I would from a conventional bank, but they would not charge me the high origination fees or place the same restrictions on me with regards to minimum loan amount.

(newbie question #4) Since I got a conventional loan for my first home, Can I still get a FHA loan?

At this point I would like to sell it, and my realtor is saying that it’s marketable only to investors since owners/occupiers will not be able to get a conventional mortgage (and the insurance will be prohibitive).Is that true?

I bought a rental property a few years about and financed almost 100% of the purchase with $ from my HELOC ($150K) and a conventional mortgage ($500K).  

Exploring my options on FHA & conventional loans for my first home purchase (preferably a duplex , one that might or might not need rehab to qualify).

At this point I would like to sell it, and my realtor is saying that it’s marketable only to investors since owners/occupiers will not be able to get a conventional mortgage (and the insurance will be prohibitive).Is that true?

There are conventional mortgages out there for 3% down.

Otherwise, you could look into non-conventional loan options (outside of Fannie/Freddie) that allow for less than 20%, such as local credit unions.As for your numbers, you're missing a few important components; the big items would be maintenance, CapEx, and utilities (water/sewer/trash) for a 4-plex.

There are a few local lenders that offer 3% down conventional options.

In everyones experience which banks offer the lowest down payment on conventional loans for investment properties?