Yes, make sure the chain has enough slack, too tight is much worse than too loose. As a rough guide, when the bike is on the sidestand you should just be able to touch the chain on the rubbing strip on the underside of the swingarm with light finger pressure.
Sometimes the brake pads can make a slight squeak if they just touch the disc at one point when you turn the wheel. Try wiggling the caliper side to side a bit to ease the pads back and turn the wheel again, see if it stops. It's worth occasionally cleaning the disc with brake cleaner (available in aerosol, places like Poundla