Sweet deal. Paint is a bit faded probably due to some outside storage. You need some Lesco Green. Does it run? Start it up and see if it holds good pressure--run it up to above what you plan to use to see if any leaks. You should be able to get about 3.5 to 4 gals per minute. It probably needs new diaphragms, if only to be sure and give you a clean start. Check for gear oil in speed reducer.
You can remove the wheels and put it on a truck. You can turn the reel for curbside use and add an electric reel motor.
For best results, add a cover over the motor to protect it from liquid dripping off the hose. Just make sure you are still able to fill the gas tank.
Clean the tank and filter thoroughly. I wouldn't spray slowers with it until you are sure it is clean.