The more ethical GCs will simply say they are too busy instead of charging insane overheads ( I’ve seen some crazy bids before).

There are many experienced flippers in Los Angeles with adequate money, the requisite experience, ethics you can respect, and always buying viable properties.

Let's set aside any and all sense of ethics and fair dealings Chris, and just say what they need to hear to get what we need to get?  

I  have to assume you value your license and keep people on the legal path, but you can understand that there is a difference between ethical and legal for "students".

I am wondering how do I go about finding ethical mentors in my area?

The more agents the firm has, the more rules will be set in place to keep that Brokerage out the ADRE's view, if issues arise with agents not doing business ethically or conflict of interest with their E/O insurance.    

So I'd really appreciate suggestions from some of you who have personally worked with companies that are fair and ethical.

@Roy N. pointed out the agents ethical obligation to present offers.  

I know that the property must be listed on the open market and I want to avoid any ethical issues associated - any thoughts on the best way to handle purchasing this property at a lower price?

I'd then create a post on BiggerPockets saying where you are from and that you're looking for advice on how to find an ethical mentor in your area.