The suburbs will be higher taxes but generally better schools and higher income tenants.

There's a reason most coaches/trainers/etc. will offer a 2-10x guarantee, because 1) they know the information will provide that kind of value 2) they also know a small percent of new investors will follow through. 

Say your firm splits 50/50 with you (there will be some variation of the split it could be as much as 80/20 or 70/30) but that $12,000 comes into the firm and say you get 50%, so your taxable income on the transaction is $6,000. 

Are you able to take advantage of the ADU as an expense against other income (W2 other gains) where you could get back most of it? 

If you are selling your business, what are you two doing for income now (goes toward financing ability)? 

Typical rates are 8-12% of income either monthly or yearly depending on manager.

Until then, Id really like to set up some passive income in the city based upon buying and holding units for rent. 

Typically, your stabilized operating expense ratio (Total Operating Expenses / Effective Gross Income) should be between 35% and 50%.

The number of properties needed to generate $15k in net profit each month can vary greatly depending on several factors:Purchase price and down payment: More expensive homes require higher initial investment, but may also generate higher rental income.

You will run out of money for down payments quickly buying rent ready rentals & the STR income can fluctuate greatly depending on the season / state of the economy.