That alone is very impressive and you are already moving faster than the majority of people out there.

Is it legal for me to show the property to the prospective tenants as long as I don't collect commission or sign any paperwork. 

My main concerns would be:- corruption- collecting rent (what to do when tenants default?)

An example problem statement that I may have stated (and built the software for) in 2003, when I started investing full time: Build a tool for lead generation that collects county records from the county recorder's office (and property card data), finds the recent first mortgage defaults  from trustees websites or public filings for properties that are between 1000 and 1700 square feet, in a neighborhood of 90% like-kind properties with greater than 20 parcels, houses built after 1978, that can cash flow at current rates when fully leveraged. 

We collect all the necessary deal information upfront to give you the most accurate quote possible so nothing changes after the loan submission for underwriting to start.

What if they have collections or judgments?

Although I can see collection issues.

This is because insurance proceeds are the path of least resistance in terms of collection (more on this below).

Budget 5-8% of gross collections as maintenance then tack on the property managers margin to give yourself a better idea of your management cost line.

Even if you can track down their bank accounts, you can file the garnishment once and collect whatever is in the account.