Consider how long it will take to get a new tenant and charge accordingly.

My situation unfortunately disqualifies me for a conventional loan at the moment, as I only have 1 year of work history/tax returns in the US.I was previously employed in the UK, however due to a 1 year gap in employment history (whilst I was going through the immigration process and was legally not allowed to work) my lender has told me they will not be able to complete the loan.This leads me to commercial loans!

Have you exhausted all your Fannie/Freddie conventional loans?

Of course we get the FHA loan or use conventional to avoid PMI.

It may sound nice to pay a 5% management fee but the extra fees can add up to be more than the other company that charges 10% with no add-on fees.

I will be doing conventional financing, and used a mortgage calculator with the rate of 5.9% interest, 30 year fixed.Here it is:So am I doing this correctly? 

I wouldn't buy one that charges an extra fee unless they are offering something more for that fee.

Many cost segregation firms, provide the extra service at no additional charge, to fill out the form on your behalf.

A regular conventional loan for an investment property doesn't require you to live in the house for a year.FHA requires that you must owner-occupy the property but not regular conventional investment loans.They will typically require 20% down though so if you're looking for 3.5% you won't find that if non-owner-occupied.

Debt to income will come into play if you use conventional financing.