Jerry hit it all, but I will add my 2 cents to the oil level.
Go with the middle of the sight glass, which is right around 1.5 quarts on my 2017 Hawk. I have been running this level of oil for 1800 miles with no issues.
Also, to tighten that exhaust clamp, put a long screwdriver through the hole on the thumb screw to snug it up. Just hand tight will come loose again fairly quickly. Then check it regularly. After a few snug ups it will stop coming loose as often.