Ruby, I'm intrigued by your notion and possibilities. I appreciate the pragmatists here, and it is true you should never get into a business venture with capital you may need in the next three years. I like that you could do this, opening up a world of possibilities, close to within your present budget - but don't discount moving costs... Meanwhile, may I encourage the optimist in you?
I just missed "the" front-and-center wedge-shaped building with lots of open sidewalk space in my economically-challenged home town. It went for a song, but had zero kitchen amenities so startup would have been formidable. For normal humans, anyway. I have been relatively successful in finding things below market and the current economy affords more opportunities than ever in my lifetime to capitalize on weak markets. Your hubby being gainfully employed means you can start modestly and work up to big impressive modern/new gear if and where your market bears growth. It sounds like the bones are there, and you would need a big percolator (normally available online), some comfortable seating and lots of advertising. A very modest espresso machine or two would probably serve until you develop a market who may support a bigger rig.
There are a number of commercial kitchen equipment jobbers, and you may find one in a city near you, who can provide insight as to what is being done and what is possible in your area. If they are doing their job right, they want you to succeed (they'll benefit from your success) and will provide you options and advice for your specific market better than all of us would-be gurus online with our colloquial experiences.
If you're not afraid of used, and can either do electromechanical and plumbing work yourself or budget for the added cost of adapting or repairing used equipment, try Craigslist (Try
crazedlist.org : search craigslist like a madman to search all or any number of CLs at once. There is an unobtrusive browser adjustment to run the application - explained when you bring it up - that I've done on a dozen machines with never a hitch.) Today, I found this listing for a great machine - probably even a bit beyond your immediate need, but a great buy - "LaPavoni P1V2 Commercial Espresso Machine & Grinder - $1499 (Lake Havasu City)" in the Mohave, AZ CraigsList.
The wonder of capitalism is that the bottom of the market is the time to buy and build.