Equipment Financing for Startup Car Wash

I’m in the process of building a car wash and exploring financing options for equipment. The total equipment cost is approximately $230k, representing ~17% of the total project cost. Given that this is a startup with no operating history, I’m trying to understand what financing options are realistically available. Are SBA loans (or non-SBA equipment financing) viable in this scenario? Would having a partner with strong credit/liquidity as a guarantor materially improve financing terms or approval likelihood? Any insights, lender recommendations, or firsthand experiences would be greatly appreciated.