You are not showing the "Cash Flow (Year X)" you are showing the average interest allocation from the borrower's payment.  

Your life circumstances heavily influence your appetite for risk and where the money should be allocated.  

As long as you purchase at least $500K ish and use all $140K ish in the purchases you'll defer all tax.And you can allocate the proceeds in any way you want. 

Look for several replacement properties and allocate that 800K in whatever way you want to get to 1.3 of purchase.  

given its asset allocation of some sort (rei), then opportunity cost would be a consideration.So currently 12% is "good"

The splits and allocations thereafter will range based on your track record, experience, how "juicy" your deal is, risk, team, hold period, and other factors.Good luck!!

Great options if you are looking for full-blown property management options.If you have multiple rentals you'll need the version of Quickbooks Online with "classes" ($85 per month to @Simon W. point) to allocate the income and expenses between different properties and their chart of accounts (list of income and expense types) doesn't come setup out of the box for real estate.For real estate-focused "accounting & tax software" I'd recommend Stessa (Free to start) and Digb.com ($1 a month to start) and Quicken is also a cheap option like @Bill Brandt mention.

I'm thinking that the $2,000 allocated to online marketing would be better spent marketing for cash investors to sell properties to than for sellers. 

There could be other issues as part of that downpayment will be allocated to capital gain as well which could be as high as 23.8% plus state rates.

Boot would first be allocated to any depreciation recapture that you have and would be taxes at 25% flat rate for federal purposes and then what ever your state rate is, then the remaining boot amount would be allocated to your capital gain and taxed at a maximum rate of 15% for federal purposes and what ever your state rate is.