I would add this to the Off Topic section, seems to be lots of Self Storage and Laundromat items in there.
From what I know, there is an SBA loan for buying a business that doesn't have real estate. My wife helped coach a client through the business purchasing process which he used an SBA Loan on and didn't buy the real estate with it. Start with buying it now, add value, make sure it cash flows in the mean time, refinance in a few years when rates go down or look for loans that have fixed rates but have balloon payments in the future and by making it more profitable it should become easier to lend on.
Look into Local banks around it, they love helping local businesses, read Buy then Build for info on the whole process including purchase options, why not ask about seller financing/listen to Codie Sanchez's take on this, and you can control the price or the terms pick one.
I bought my business back in May on seller financing and we moved it into our house so different scenario then you are in. But we did Seller financing with step up payments and that was very intriguing to the seller. First year was affordable and every 12 months after that we added $100 to the next 12 payments until it is paid off. So they get interest over time but also get bigger payments as time goes on, which in time our business should be performing better and better to where the payment gets easier and easier to handle.
Good luck man! It isn't easy but it becomes addicting and fun!