Instead of wasting your money you might want to print out the harmful effect of not replacing the filter for residents and make sure the tenants always get a copy and warning,     Also you can take it a step further and you can-write it in the lease that "if the filters are not replaced regularly tenant understand that this will cause a $300 repair bill at the end of tenancy, where tech or HVAC cleaning co. needs to come out and clean the system."

Low fixed rate, interest only for the first 10 years, and have check writing capabilities.

@Jobee Vincent Buenaventura well, if most lenders are taking 60 days to write a cash out loan then you would only need 2 more months to start the refinance.  

Things I imagine will be an issue:- City approval as house is currently a legal duplex- City may force me to rent it as a single family home right away- Parking - another car park may be needed to get approval from council but I've heard exceptions can be made- Entire project going over estimate by a lot- Not being able to get financing then having to turn it into a single family home rental which won't cash flow so well.Geez, writing it up like that makes it sound like a terrible idea! 

Write out the questions you have, whether they fall into the details category or even just the “I don’t know where to start” variety.

What I detested was the process: collect all the bills, open the mail, rip off the stub, put the remainder in that bill’s receipt folder, write the check, make the journal entry, stick both stub and check in envelope, put on stamp, lick envelope, write in return address, etc.

Ideally you have this in writing but if not email your agent letting them know of the issue you are having and ask them what the next steps are. 

I recommend first surrounding yourself with a good CPA, as I learned that by investing with my pension, I am not able to take advantage of depreciation--a massive tax write-off!

You may be able to make more money with airbnb's, but not all money is good money because one of the major problems with airbnb's is you have to worry about bad reviews and guests write bad reviews for the lamest reasons.I am a contractor and I work for many people who own airbnb's and they make a lot of money, but airbnb's is definitely not a passive business.

Get every form you can find, compile the items on all the forms and create applications and lease agreements that covers everything you find on those forms and write that information to cover your butt and to make everything clear, in the beginning, for what you expect from your tenants.