You definitely might not want to run it on the bench. Often, the instructions for gas engines will advise against bench running because there is nothing to absorb vibration and the mounting points on the engine could possibly fail. When mounted on the airplane, it absorbs this vibration.

If it is really sloppy, rich, it might vibrate less when tuned properly but it will still have some vibration. There is no way around it. You have a fairly large, single cylinder engine so it is going to shake.

Just make sure your firewall is secure, wrap critical stuff like receivers and batteries in foam and use thread locker on all bolts and screws. I like to check all of my screws when I take a plane to the field as well. It will work just fine.