I calculated rent estimates using both BP rental tool and Rentometer.com so the larger side will rent for average $550/month per room. 

Real estate investing is forgiving; the average person can still make money even with some big mistakes.

Real estate investing is forgiving; the average person can still make money even with some big mistakes.Software is a common question on BiggerPockets.

The average of those numbers are 250k and the days on market spans from 35 - 55. 

My friend Alex owns several million sq ft of industrial space in MN and he says industrial is the best, the demand was very high for last 10 years, vacancy rate is 3% and he charges on average 2k for 3000 sq ft unit of industrial space, that's why I decided not to do ministorages; more tenants-more problems to solve.

I don't think either work harder that the others on average.

If you know you average booking lead time you can be more, knowledgeable about when to make adjustments or when to be patient.

Purchase price averages at about 75-110k around 15k in rehab and an ARV of 120k++ depending on location, size, level of rehab etc. etc.

What is the average rent- actual, signed leases, not Zillow or FB ads, for a product like yours?

Average rent in my area for a 3/2 is $4,000 - $5,000 a month and with the attached 1/1 ADU could rent from $1,800 - $2,500 a month.