I have heard a wide range of cost per sq ft used across the site.

Expand your base until your seed money is wide enough to flip for profit...and buy those CF Holds using only the profits...which repeats over and over everytime you flip your seed money.This is incredibly fast, and you don't need to look for money all the time...it is your cash (expanded) that you will be using.

Wide range of RE topics covered in seminars and monthly meetings.

I am not sure where the market would be for that level, perhaps Mobiles (Single wide and Double wide), I'm just not sure.

I do a wide range of different tasks, from drywall, painting, concrete, a bit of plumbing and so on.

I've heard of other Brokerages creating, and profiting from a REI group, office wide. 

@Christopher ShearinThat is a pretty wide open questions but I will do my best to point you in the right direction.It depends on what type of investing you are doing and other factors.1.  

She noted 200 spaces, space rent is $395-475 with double wide, single wide, and RV spaces.

Very wide variety investors with many different angles.I like your idea of adding solar to a property, have you talked with anyone that has done it before?

It's just wide enough for a car (can only partially open one side of the doors) and the 'driveway' ends at a curb instead of a ramp to the street.