Tenants save money when using a shared meter, so there's plenty of room for error when calculating how to distribute the charges.

There are are number of contributors here on BP that manage note funds, although I don't know of any that pay 10% and make monthly distributions like PPR does. 

One thing I've learned is stick with one technique until you master it before you move onto something new.

You can track your results on mailings, and further regime your technique.

@Jim P.While both solo 401k participants funds may be held in one bank account, from a long-term planning perspective, distribution, planning, and audit perspective, it may be best to hold each participants funds in separate participant accounts. 

Further, sheltering income via a retirement account does not eliminate the tax, it defers the tax until the income is recognized as a distribution from the retirement account (mandatory distributions begin at age 701/2.).  

The problem you would face, if you mortgage in order to invest in the stock market is that you'd be paying approximately 4% on any loan in order to invest in the market which, on the whole, has a yield distribution of less than that (e.g. the S&P 500 yield (check out SPY) yields about 2%.  

If that's the case, what are some of the screening techniques I can use to have a warmer and fuzzier feeling that they will pay me every month.  

Capital gains tax rates depend on your income level however, an IRA distribution and the depreciation recapture are treated as ORDINARY income. 

A lot of condos here in Las Vegas run into trouble with financing because the owner occupancy for the community is < 50%, but generally speaking the bank should tell you precisely why.If you don't want to put any cash down, you can research creative financing techniques here on BP, but the more creative the solution, the less appealing it is (generally speaking) and is a tough sell in a hot market.