Online stores which stock larger cycling gear?
Try Aero Tech Designs. They have shorts, jerseys, outerwear and liners and go up to 6XL in many items and styles.  The have large gloves as well (under accessories).

As a guy who fluctuates between XL and XXL one recommendation I want to make is that you consider bib shorts.  You can wear them under any kind of shorts if you don't want the lycra look. The primary advantage of bib shorts is that everything stays in place, rather than shifting, or in my case the waist band rolling down.