For our clients, everything you listed (1-6) we provide monthly in their Owners Report package. 

Once the election is over with, another stimulus package should inject even more life into the industry. 

They can handle underwriting, loan package prep, and lender communications allowing you to concentrate on other important details.Yes, I’m a professional mortgage broker and I work with both residential 1-4 and multifamily 5+ investment properties.

Would you recommend this package of information for investors making use of a property manager as well? 

You cannot sell a package to OO buyers.  

He has already shared the investment package with his contacts who are actively looking it over, but I thought I might reach out here to see if anyone has any guidance as to where to look online for investors interested/capable of investing in larger-scale opportunities

We've had a few, but we're usually close to six months anyways because we package properties together before refinancing them and it's only with banks we've worked with a long while and have a really good relationship to find.

Depending on your jurisdiction, a calculation package may also be required. 

If you have some capital to leverage or partners with money, then make up a presentation package for the bank.

He calls the process you describe land packaging, which consists of paper improvements such as city approvals, engineering, architecturals, and a more clearly defined vision of the future use fo the property.