I have gone thru the password reset process 2-3 time over last 2 days since I couldn't get past login screen ( so clearly I am at least typing in my email address properly lol). 

An investment broker will help find the right property for you with their knowledge of the local market and the ability to run numbers for you on cash flow, and in the property management part of their business they'll be able to take over landlording and fully vet tenants for you through their screening process to make sure the right tenant is in place.

Tenant screening is so important.

Multi-family is good in concept, but carries more risk (repairs, tenants, scalable size etc).  

Its important though to not just look at the last year, as the small sample size could give you the wrong impression on the turnover rate.

I'll be experimenting with the average loan size at first, until I can get a handle on how much effort each loan requires to originate.

Determine what size in that niche you are focusing on for product type and sales price.3.

Here's probably my best: https://www.biggerpockets.com/renewsblog/2015/05/25/5-dominate-property-management/.But the big things are 1) Screen very diligently, 2) Treat it as a business, not a hobby and treat the tenants as clients not friends so 3) Be fair but firm with them when it comes to their requests and/or excuses regarding rent.

Appraisers really do not consider the nature of the rehab on homes like this, rather they are looking at price per sq ft, year built, size, etc.  

They are much different than SFH and are analyzed differently, depending on the size.