You said you were a self employed individual. 

It is a lender out of Madison that I found some favorable terms with, potentially 15% on an investment loan, and they might be able to wrap in the repair loan as well, Josh Nelson, you can find his info online.

I'm Watching a quick clip of Grant Cardone on youtube saying we need to be online, the best marketing tools are sites like facebook and Instagram.

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?

Does anyone have good suggestions on good online offerings to prep for the TN Real Estate exam?

Some of the online application/screening services do not share applicant SSNs with the landlord. 

I'm a newby in real estate but I do currently own a house with no mortgage and I'm looking groups or meetings in Atlanta, Ga to do some networking with more experienced individuals.

It looks like you have done a lot more flips after this and your online presence is impressive.