You'll need to clarify what you mean by "deals fall through".

Selling some property to pay down high-interest debt is good, but also consider looking into ways to refinance or leverage your existing assets for better cash flow.

Dewald: Some other good zips are 63074, 63042, 63044 - great for long term rentals.There are good areas in south city left as well :-)I see more and more issues with municipalities like Berkeley, Pagedale where they want to narrow down the amount of rentals within a neighborhood and require homeowners to occupy and won't give out occupancy for rentals.Let me know if you've got any questions. 

The questions I would ask - what is the interest rate? 

Good luck with your new venture.Here for any questions you have regarding REI bookkeeping.That's what we do!

What made you interested in investing in this type of deal?

What's the ARV on these houses?

However, if having your own separate home is your main goal, buying a personal home first might be better, though it could limit your ability to buy an investment property soon after.

What is your price?

I think the trick is if what they tell you what you already know, what do you do about that?