Yes this can absolutely be done via non qm lending products for fix and flip and then refinance via a DSCR loan .

My concern with an FHA loan is that we immediately become a less-desirable option for a seller in a competitive market due to the loan type.

The requirement is your intent to hold for productive use in trade, business, or for investment.Longer is better than shorterRent is better than no rentEfforts to hold are better than no efforts to hold.Circumstances must change your intent. 

Please feel free to reply here or contact me directly if you have expertise with this type of cross-border tax situation.

The best strategies for any type of cash flow are coliving/rent by the room (would recommend Homeroom for a passive hands off turnkey type investment that still will produce income), multi-family 2-4 units where a rehab/value add is needed, or buying a property with an ADU/Guest house and treating each unit separate unit. 

What type of properties are they ?

I have very little info, just curious if anyone has experience with this type of building and location.

Especially once you get a chance to build out a decent portfolio of these types.6 months is pretty standard as well, but it would REALLY benefit to be up front with loan amounts, leverage, and seasoning requirements.

What made you interested in investing in this type of deal?

And as Clayton mentioned property that is eligible for 1031 treatment is property you purchased with the intent of holding for productive use.