I am rebuilding my real estate portfolio and exploring my options about using debt - very carefully. 

Probably not and if you do be careful with product selection.  

I meant you need to take care of that issue.

Tread carefully wherever you buy as there are unforeseen HOA management risks in addition to the special assessments for delayed maintenance and building insurance skyrocketing. 

Be careful not to "Outkick Your Coverage".

I also noticed that they made a hole in a wall due to slamming the door against the wall.I asked them to take care of the weeds and explained that letting the weeds grow out of control is a violation of the lease agreement and the HOA rules.

The investments I have now are near my primary residence, so I was able to check in on the progress when we were renovating - and till this day I can swing by if I really have/ want to.

For now keep your money in brokerage account while you research this.. and choose carefully.

They're not easy to maintain for rentals, your cleaner really needs to know what they're doing, or you hire professional management and they take care of it for you (I can connect you if you need).

How do I calculate the monthly mortgage+ interest+ insurance+ tax that I should be able to comfortably able to take care.3.