The comparable price between new and refacing is not much different.

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

I recently learned about the BRRRR method as an alternative to just getting traditional, conventional mortgages on rental properties, since I heard that there's a limit of something like 4-10 mortgages you can have taken out in your name at a time.

For me vacant land would come with far more headaches than a traditional rental. 

Class A properties, on average, command 40% more rent compared to equivalent class B property. 

I will potentially be renting out a 5 bedroom 2.5 bath duplex and have not seen much to compare it too.

Is the price comparable to other similar properties?

This is best done by comparing what other homes have Sold For in the general vicinity of the property.

Might talk to local property managers to see what they say.I personally wouldn't use a live-in property manager for a multi this small, just doesn't make financial sense compared to paying 8-10% for an outside manager.

We get $2200 per month in rent from a traditional tenant.