I would like the CAP program that provides a business address and number, but what if I realize I'm paying too much and want to quit, then would I lose my address/contact history?

Try to go for cap rates lightly better than market, but not much better as had bad experience with super high yielding props.  

Timing the sell of cap. gain after being converted into a stock.

Discount rates and capitalization rates (cap rates) are two fundamental concepts in commercial real estate (CRE) analysis.

If you're saying they charged $360 to change a doorbell, which includes 1) sourcing it; 2) trip to source to aquire it; 3) aquisition of it and any other materials needed for install, screws, elect. caps, etc.; 4) trip to your rental for install; 5) un-installing the current doorbell; 6) installing the new door bell and wiring it; 7) securing your rental upon exit, clean up and disposal of the old doorbell; 8) trip back to their office --- Umm...

If the 5% counts conservative cap/ex/vacancy/etc. then its OK.

The only people you will attract are those who can't get bank loans and that's probably not the investor you want...If you want to sell to an investor, structure the deal so it is attractive to investors- figure out a competitive cap rate and back in your numbers from there. 

I currently manage the property so, I know that the operating expenses amount to $67,204 annually.I've done some research and found that the cap rate in our area typically falls between 7-8%.

Can you share the cap rate and rental rate?

Make sure you use net cash flow, so you are accounting for maintenance, repairs, cap ex, vacancy, and property management; your cash flow might be $500 per month net if the gross is $1k.