They brought it out to my truck.I was shocked that people were going in and out of the store.

Be prepared to have 3-6 months of loan payments held-back at closing -- this is called an interest reserve or interest reserve hold-back (basically the first 3-6 loan payments are held in escrow). 

Allow 10% reserve for existing problems for others that are occupied.

Compare it to your initial equity (downpayment + capex + closing costs + reserves).

Cash is precious, you need it for spending, for reserves, and for future investments.  

Thanks, I mainly wanted it to be used to store leads and to be able to follow up with them over time in an organized fashion.

Eviction is reserved for tenants. 

I lived in that property for about 2 years before being called up for deployment with the Army Reserves.

For example, do they have 15 store credit cards and tons of credit card debt?

You do need reserves, 3-6 months or 6-12 months depending on the lender.