They do that many because they have a successful system that allows them to do that many. 

I also look at it from the perspective of I now have extra cashflow to remove dangerous trees or do preventative maintenance to systems that have higher likely hood of causing damage.For the management I self manage for now so that fee just goes to me.

Keep all the hard systems on a 6 month service schedule.

One thing I can say once I got the system going the business got alot easier, after I automated almost everything I have had the pleasure of rarely going to my airbnb and I am booked 92% of the time, not only did my research pay off I am reaching the numbers I expected and more.

(Heating system left alone and siding left alone)Get quotes as in Hudson county I've gotten pretty expensive pricing.

I would be careful when looking at discount PMs because if they aren't making money, they likely have terrible systems in place for management. 

The goal is legitimate: due to complex tax rules, you have opportunities to game the system by selling some of your investments and intentionally generating either gains or losses.

Cameras, security system, motion lights, cage lock on hvac, etc.They were stolen cause it was vacant and had a for sale sign.   

The only way the system does not work is if you take the refi money and don't het another property that cashflows.   

.- Do you want to manage the new system internally or have an outside vendor manage it for you for a small fee.- Would you be requiring custom changes often to your digital workflow?