As U.S. citizens residing in Europe, we are required by the local tax code to hold the property in our personal name.

What are true returns for comparison, before or after Income taxes? 

Instead of jumping into an expensive Long Island market with negative cash flow, consider investing in a Texas market like San Antonio, Houston, or DFW suburbs—these areas offer strong rental demand, lower property taxes than NY, and better cash flow potential.

So many variables can turn a deal sideways from 1 hour to the next - i.e. inspection findings, title issues, contracts, financing issues, taxes, dept. of buildings/local municipalities, etc.I'm glad to hear you made it through the challenges, and it sounds like you'll be able to leverage this experience as you grow your portfolio.All the best to you along your journey!

Is an IRA subject to capital gains tax?

I bought it last year and thus far have: 1) Appealed assessed value to bring down taxes, 2) Got better (less expensive) insurance, 2) Rehabbed 3/4 units, and 3) increased rents $300-$400 per unit along the way.

Is your DSCR ratio greater than 1-meaning are you cash flowing (according to the lender's criteria of mortgage, property taxes and insurance (and HOA) if applicable).

I have a followup question - I will realize a lot of capital gain from this home in Idaho, so I think unless I purchase a new primary residence I will have to pay that capital gains tax. 

Even using dedicated independent contractors as your maintenance crew requires book keeping (bills receivable, payment, bookkeeping to track expenses for tax purposes and warranty claims, etc.).Having a reserve for cap ex, but not allocating any estimate for the cap ex cost means that your cash flow estimate does not include cap ex. 

If your bottom line numbers on tax returns and W2 income are not strong however, this will be an abrupt dead end.