First, you can't take advantage of the economies of scale like you can in a bigger facility....meaning that as you expand, your revenue will increase faster than your expenses which will have a positive effect on profit. 

I am willing to sacrifice some potential profit in order to get my feet wet and begin to build my team.

I want to know how the ‘Total profit if sold’ fields are calculated.

The interest would be deductible from rental profits, but would be taxed as interest to you.You should speak with an accountant who can get the full picture of your situation and help you decide what the best option is.I will say, that most people here on BiggerPockets, including myself, recommend keeping things as simple as possible starting out.Best of luck!

All depend which program fit your need and will profitable to you as an investor.

Some syndicators are fee based and some are cash flow profit split based.  

You can also cherry pick real estate deals where someone made millions,tens of millions or more in profit on a deal.People can talk in broad strokes on a macro view but then there will always be unique examples at the micro level.I have lots of clients that have made gains in stocks and now they want to get out as they cannot stomach the market.

The 100+ Units I own will be diversified some profiting a lot more than others., but you are absolutely right I will need to almost multiply that number of units by 10x if I expect to receive the type of Cash Flow I need to deemed successful in my books. 

In the end you get paid retail price for the land plus 20% of the profit on the building(s). 

Sell each house, in turn, paying back your loan and keeping the profit for yourself.