As @Joe Massey said, we teach various classes and webinars for investors here in Denver.

Having all tenants on M2M leases is ideal.Being inherited has no relation to whether they are a asset or a liability, it depends on the individual.

Unlicensed individuals cant provide access to the home.

I'm sure we all know someone that knows someone that has done it but, individual investors, do not get to contact a lender/servicer on individual loans, to buy the note.

It permits you to tailor the LLC provisions to take into account the individual tax goals of it's members within the limitations of the tax code.

Who has experience switching from one master meter serving a park to converting to individual meters and in the meantime, discovering leaks from a huge web of water lines, any suggestions?

That experience will teach you what you need to know to find good deals.I.e.

Only if the coffee shop is in the lobby of a moving and storage service.Not to be offensive, but I would suggest you might have better success with property management.There are lots of people who can self manage, but I always say one of the things most property managers are great at vs most individual self managers is enforcing deadlines and collecting late fees.   

New builds generally have much less price flexibility than individual sales. 

If you can get lines of credit either on the properties individually or collectively I'd look into that.