I would design a strip mall for 2nd tier businesses. All Drive through (Garage door front and back potentially) with a small office in the front. Leave room in front of the building for parking facing the street and facing the building.
The tenants I would go after would be auto repair, Quick lube, Rug Shop, Bicycle Shop, Beautician, gun Store, Sandwich shop, Pizza shop, Bar, fitness center, car stereo, small grocery. The lowest rent you get per square foot is from electricians, carpet cleaners, etc for vehicle storage--not the market I would go after. Light retail traffic business locations get the best rent.
Get the design done and build your unit first and add on modules when you can get more money.
Or build out the whole thing as storage rental (it is a little small) with the area you are going to use as the facility office and your truck storage.
The classic auto repair building has front and rear doors with a small office in the angle off the front with three angle in stalls. Build one of those and it will never be empty.
Once you get the whole design done start landscaping the whole thing. Do you have an alley on the back of one side to drive onto from the back doors?