Then not doing any back and forth with individual buyers, just have them submit their offer and choose the best one.

About 3-4 minutes later (around 1:10 pm), while I was still writing my contact information (I needed to write it twice (the attorney also needed the information)) another individual walked into the room and indicated that he was interested in the property that I won.

I am fairly new to real estate investing, I've read multiple books and will continue to learn from this site before making any rash decisions.I am hoping to learn from others on this site, and build a network of people to assist me with my business ventures, If there are people in either area who would like to connect please contact me.

Individual results may vary:) 

If I can be of any assistance to you as you establish your business, I'd be more than glad to help.

Looking into sites that can assist in mapping crime/education/etc. 

You said you were a self employed individual. 

Bigger pockets has been very helpful for me in the past and I thought I would reach out here as I know many skilled individuals hang out here.

This cannot be decided without a total picture of both the duplex finances and your finances as individuals. 

I've seen 5-15% of NOI, estimating each one individually, and other estimates.What number helps you sleep at night?