If you are only going to do this once a year, buying a gas compressors you have to deal with dragging the compressor out from where you stored it. Get it up and running, use it, then winterize it and store it away for next year. If winterizing the compressor and get likely fighting with the carb a few years down the road is within your abilities go for it. I take care of my gas power outdoor equipment and the stuff that rarely gets used is usually the more fickle equipment. The stuff that is use all year around except winter still works like new. Even the 14 year old string trimmer works like new. The pressure washer that's less than 5 years old and used a couple of times a year always needs fiddling with.
Renting one, if you can get it home is probably $40 - $50 and no hassle of maintaining it. Buying one ~$1000.
Electric compressor big enough to do it easily ~$600, plus running the electric for it. Very little maintenance. Hopefully you could find other uses for it. The compressor does not need to be near the blow out point you can run a long air hose.
For a compressor that plugs into a 110 outlet, looks for a compressor that can do 5 or more cfm and has 20 gallon or bigger tank, bigger the tank the better. But be prepared to take time to let the compressor cool off and for it to refill the tank. You could also rig up some fitting to join two compressors together to get more volume of air. Just make sure to plug the compressors into different circuits (ideally not on the same 110 branch). With two compressors running in parallel you could get a similar performance as a larger 220 compressor.
If you're not handy or the initial outlay isn't feasible, start calling for a better price from someone else. Talk with your neighbors and see if you can everyone done on the same day.