Purchased various sheriff auctions, short sale, and just low balling.

"low balling" doesn't necessary meet those standards.The way that realtor's generally have to work is provide the seller the true and accurate comps (market value) as well as expressing to them that you could also buy it at a discount but buy it fast, no repairs, etc (all the other stuff wholesalers say/provide).

IF you don't have the balls or finances to weather that kind of time frame, go buy some equities or govt debt. 

You don't have a choice of the sellers agent and if they are bad slow, drop the ball that is where a buyers agent is effective. 

Hi investor, I have 10 vacant homes for sale would you like to give me a “low ball offer”???

I would start out with friends and family to get the ball rolling and then ask them to refer you any investors they think would be interested in your service.

In places where I provide utilities I must provide within the temperature range the state requires but I don't need to let tenants control the thermostat whereas if they pay utilities they must have control. 

Otherwise, you'll regret it.Plus real estate isn't an intrinsic, nor is any physical asset, ball game.

Active Utilization of Your S-Corp: This is more small ball type of moves.

Try to see a ball park of what is possible.