Well, the "Adverse Action" letter is required by law so I wouldn't recommend you trash it.If they are rejected for information contained in the credit report, I abide by the law and send them an Adverse Action letter.

Check with your container company, a lot of times they will work out a deal with you and supply a dumpster that will just be for scrap metal.

The information on the tenants contained no SSN's, etc...

The security instrument may contain an assumption clause.  

Your contractor should use a similar format which contains, your name(s), the contractor’s name, property address, date, and breaks down the labor and material.This may seem like a lot of documentation, but it is required by our underwriters to move forward.

I own and have read 5 books (I think...) and the information they contain you either know is guru talk or information I already learned on here.

Whatever those are, I suggest you define them, make them visible to yourself and commit to them. as a new member (I think 11 minutes now lol) I am very impressed with all the supporting material contained within this website & intend to capitalize on them.

The one tenant I have interested is a roll off dumpster company who wants the office space plus the lot to store containers.

I like the search features: https://www.biggerpockets.com/searchAlerts can be really helpful too: http://www.biggerpockets.com/alertsThere are a few self-contained guides that you can access here: https://www.biggerpockets.com/guides

The other factor to consider is many leases contain illegal provisions.