Plus, the rental income is covering the mortgage payments on most of them, which helps keep the cash flow balanced.Now, I'm looking to expand into the US residential real estate market.

You won’t have to worry about which policy or carrier covers what, reducing the chances of delays or disputes between carriers.More Predictable CostsScheduled programs often allow for more predictable budgeting.

What's covered and what isn't?

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Like @Kevin Sobilo said, cover your bases.

I had to scramble to cover the extra costs and it completely threw off my budget for the investment.Another red flag for me is delayed communication.

This does not even cover more costs to keep improving and adding to the software.

Cash flow on a househack is near impossible, the best thing to look at will be if you were to move out would you cover costs. 

Reserves:Most lenders will ask for 6-12 months of reserves to ensure that you can cover mortgage payments if you face financial hardships.

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.