I've had great tenants in rentals that don't include central AC, but here in North Carolina with our 100-degree + high humidity summers, it's almost a certainty that every household will run AC most days from the end of the school year through the end of September. 

Maybe these guys aren't in a coffee shop in Uganda.I used to work Loss Prevention for Sears and we had a guy that wrote hot checks for furniture and house hold goods.

I wouldn't rent rooms though because having that many unrelated people in a household might be a violation and if you live there they will befriend you and will inevitably end up not paying rent and/or becoming dependent on you for rides to places, food, cleaning, etc

Generally, you can contribute to a Roth IRA if you have taxable compensation (defined later) and your modified AGI (defined later) is less than:$179,000 for married filing jointly or qualifying widow(er),$122,000 for single, head of household, or married filing separately and you did not live with your spouse at any time during the year, and$10,000 for married filing separately and you lived with your spouse at any time during the year." - IRS Pub 5902.I would really like the solo 401k, since from my undertanding you can contribute up to 50k a year?

during the recession according to the Federal Reserve Bank of St. Louis.

We're not talking about a whole household of stuff, right?

As the last line says:"Just one percent of the Fortunate 400—four households—appeared on the list all 17 years"This would make sense considering that many of the real rich do not have income that is steady every year in an amount that would put them that high in the rankings.

The city I'm in is a depressed area of about 30,000 people with very little in the way of jobs paying over $8.00 an hour, avg household income here is $25,000.

Ask the tenants to select one responsible person to be the "point person" for the household.  

Believe it or not, some 35% of US Households are renter occupied (http://www.nmhc.org/Content.aspx?