The tenant is long-term, amazing, and pays premium rent ($1200/month for a 250 sq. ft. studio out in the middle of nowhere), and in return I provide amenities such as a washer and dryer.Her washer and dryer was pretty old and had been giving out, so I ordered a new one from Home Depot with a scheduled delivery date of today. 

I think that you should allow $800-$1,200 per month for health insurance premiums. 

We have a very low-risk profile otherwise, are paying a premium on the rate due to cash out re-fi, and this loan is for 75% LTV, so not far off from a more traditional investment loan. 

IT's very hard to estimate these premiums when they are tied to your personal name/credit.

A few things that can impact your premium - Prior claims, do you live there or is it a non-owner occupied rental, the building value, age, etc.

You are paying retail plus, paying remote investor premiums for repairs, and a single point of failure.

So, if you are trying to stretch your income to afford the property, OR if your credit is not great, then this is the way to go.They BOTH will have some type of mortgage insurance premium because they are under 80% LTV (Loan to Value). 

At this level of software, I dont think there is one that is what I want without getting a premium package like buildium. 

There are probably some specialty policies you can find, but the minimum annual premium would be in the $50k-$100k range.Am I correct in my assumtions?

Also, in a down economy those were the first to lose their potential rent premium.