To this day, I still use the BiggerPockets Calculator for everything from 2-4 unit properties all the way up to the 224-unit portfolio we're working on closing this February.

I've reached out to Metron with some follow up questions of my own:What are the associated cost with each individual unit?

How many units are you looking to obtain? 

You can look on websites like https://www.corporatehousingbyowner.com/search/United-States... and https://www.furnishedfinder.com to see what similar houses are rented for.

You certainly can ask the seller to make the units vacant before closing.

Their Gold Coaching program is $10K which is similar to most other land coaches. 

I have a special fondness for I-found-a-pile-of-gold-in-a-crapshack-basement-help-me-invest posts.

I utilized those funds to purchase 18 rental units.

You can us a VA Loan to buy a 1-4 unit property as long as you live in one of the units. 

If you only have one LLC and don’t need entity tracking, you could get a lower subscription and categorize your properties as ‘customers’, then units and tenants would be sub-customers.Simple Start would allow you to invoice your tenants (if desired through QBO) and produce basic reports.