If you go all cash will you have enough reserve funds in your SD IRA to cover unexpected repairs, and other expenses associated with owning the property?

I get back an email confirmation of receipt or failure.

Credit and Liquidity Issues so when the nation's banks face a credit crunch, often caused by a higher prime rate, its profit margins and cash reserves can feel the pressure, resulting in decreased lending in the overall economy, and consumer spending. 

I'd like to own 1 within a year, 3 within 2 years, and 10 within 5 years (disclaimer: that's a first pass at setting some goals, so I reserve the right to modify).

Can anyone confirm?

You have to have reserve funds for that emergency water heater, HVAC or roof problem that pops up the day after you buy/lease option the property.

You'll also have to have power to those vacant homes while you renovate them.R&M/Reserves: It's hard to give you a ballpark here since I don't know what the park looks like.  

I'll see if my knowledgeable realtor/investor colleague from your state can help confirm.  

One thing to add, make sure when you are looking at your cash flow you set aside some for reserves for the inevitable capital improvements that will be required.  

However, income, assets and reserve are a must.  2 to 4 units are not considered commercial so this specific loan is perfect for what you want to achieve.