I can do this work cheap because of my employer, and access to equipment.

While I won’t say that the option doesn’t come up from time to time, it is rare and most of the properties that fit this category quite obviously have problems of their own that you won’t be financially equipped to deal with.  

The various books links below are those that have inspired me as well as equipped me with actionable items to move forward in my journey of finding financial freedom through Real Estate Investing.

I would always buy new equipment to ensure you have your warranties.Also, it sounds like this guy is just trying to offload inventory, I would tell him you want he equipment sized properly.

What equipment do you have?

In CA it will make increasing sense as it is mandatory for all new construction under three stories to be equipped with solar systems starting Jan 2020.

Ideally, you would now prime the wall with two coats of oil-based primer like Kilz Original while wearing a respirator equipped with organic vapor cartridgessIf that doesn't work, the plaster or drywall has to be replaced, with all the mess and expense involved.

I got a call this morning at 7 am from a guy that has heavy equipment .  

Most reputable kitchen equipment vendors provide design services.

Find a facility, do the buildout, get the requisite licenses, buy the equipment, brew the coffee and open the doors.