You can get an air bomb and fill it at the gas station, no compressor noise at your house. I think the one I owned was 10 gallon size. As for removing the barrel for routine maintenance, not really sure that's a good practice.

If your barrel comes loose that's a different story. Then it sounds like you need to buy a wrench. A new crush washer if indicated should be used everytime the barrel is removed, they are not reusable.

If the barrel comes from the factory finger tight, WOW, the quality control/inspection department needs jacking up I think, someones not doing their job properly.

Good luck whatever you decide and have fun with your new toy!!