Did the new tax law also change the UDFI tax rate to 21%?

That'll provide the basics, but they'll probably be written in 2002, so remember that the Internet changed a bunch of things. 

I've had it for less than a year and have already seen noticeable change in the neighborhood. 

Annual Expenses are projected for the property by multiplying (1) the actuals for the current year you obtain from the seller and (2) the project rate at which the expenses for the property will change year over year.Property Value can be obtained from your realtor or can calculate it based on the comps for the area. 

.* Interest rate (default is 5%, but you can change it.

Also remember that regulations are subject to change and you will need a Plan B if short term rentals are outlawed or if rates and occupancy suddenly drop.

You can change the actual dollar figures but larger theme still applies.

A was considering changing out window units on a six plex in Oklahoma last summer and the quote I received was about $2900 per unit for single zone.

(Ultimate Goal)Goals will change and adjust based on circumstance and perhaps it's wishful thinking, but I'd like to start with the end goal -both short and long term- already in mind and formulate the plan to get there.

IMHO, you need to change management companies pronto.