Should have pinged you to post #38.
Congratulations on your 800. If you have a lot of lines, and a lot of revolving as well, and a lot of old lines (which you likely do) closing one line won’t hurt your score too much - unless that line is contributing substantially to lowering your debt/limit ratio.
My goal is to be debt free except for the mortgage and then to never borrow again. At that point, I wouldn’t care if my credit score was zero.