I've done Craigslist, but I really want to maximize my exposure.

This keeps the cash exposure to a minimum and keeps the GC from having too much cash on his hands. 

An alternative would be to replace the windows in those units with predominate north and eastern exposures first and the others at a later time after you have replenished your reserves.

Vanguard tends to have several low-cost mutual fund/index fund options to gain exposures to domestic and international equities, fixed income, etc.

It isn't an issue of control with me, it's about getting exposure in commercial, office and new apartment developments.

He put a spray on the floor and required that I vacuum everyday; the vibration causes eggs to hatch and die with their exposure to the spray.I want to save myself the hundreds of dollars it cost me by doing it myself. 

My employers were always larger firms with highly specialized roles, so I wish I had better exposure to leasing, acquisition, and disposition transactions - I have some exposure but not the nitty gritty good stuff.  

If you're just starting out with minimal exposure to real estate, property management, and reading financials, going big will most likely set you up for a bad situation which you'll need to rely on someone else to help you solve.

Won't really need the umbrella unless you have multiple risk exposures.  

As an added bonus, my son just finished HVAC training, and my nephew has helped his father on many rehabs.