Aaron connected your questions, which will allow me to better answer you. Most of what you are looking for may be possible. I don't work in the Kelso area, so you will need a local agent to help you find your home. The main difficulty I envision is owner financing.
Most sellers need the cash to purchase another home. Those that would consider owner financing may want a substantial down payment to offset the risks.
Your options will increase if you can qualify for FHA or USDA financing, so it may be worth meeting with a lender to discuss whether you currently qualify or with some credit repair may be able to soon. USDA is for rural properties and permits 0 down, FHA requires 3.5% down payment. Best of luck.