As @Jerryll Noorden said BE HONEST, full disclosure, INCLUDING that your a licensed agent. 

If you're looking for cash flowing markets.. a lot of investors, including myself, are looking in cities like Cleveland.

I pay $875 (including principal, interest, taxes, and insurance) and rent it out for $1,625.

Interest rates and cap rates change, competition changes, your PM ends up being horrible, lots of variables.Just to throw you a monkey wrench, in your killer spreadsheet does it include the credit score, income, and employer of every resident? 

I'm glad to be included on this platform with like minded interests.

If you want to develop it, I can refer you a lender that will lend on a completed subject to appraisal but you'll be limited if you just want it for the lot.If you simply want the land as part of your property, you have more options including a HELOC which you can still use for development down the road. 

Maintain - includes taxes and insurance?

Including thinking about moving your investing a little west into GA if the SC tax situation haunts you.  

This includes cap ex, repairs (will a renter leave the property in the same condition you hand it off in?

Here is the statement expanded to include formulas for doing one flip per year, two flips per year, five flips per year, and ten flips per year: One flip per year: If you start with $50,000 and do one flip per year, aiming for a 35 percent return, your progress would be: Year 1: $50,000 + (35% × $50,000) = $67,500 Year 2: $67,500 + (35% × $67,500) = $91,125 Year 3: $91,125 + (35% × $91,125) = $123,019Two flips per year: If you start with $50,000 and do two flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (0.7 × $50,000) = $85,000 Year 2: $85,000 + (0.7 × $85,000) = $144,500 Year 3: $144,500 + (0.7 × $144,500) = $245,650Five flips per year: If you start with $50,000 and do five flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (1.75 × $50,000) = $137,500 Year 2: $137,500 + (1.75 × $137,500) = $378,125 Year 3: $378,125 + (1.75 × $378,125) = $1,039,844Ten flips per year: If you start with $50,000 and do ten flips per year, aiming for a 35% return on each, your progress would be: Year 1: $50,000 + (3.5 × $50,000) = $225,000 Year 2: $225,000 + (3.5 × $225,000) = $787,500 Year 3: $787,500 + (3.5 × $787,500) = $2,756,250The key points remain the same, which is to aim for a high return through flipping, reinvest the profits to compound the gains, and be disciplined in order to build significant wealth over just a few years of this real estate investing strategy.