Topstoney - Wool Jumper Question

Hi all... sorry if this has been asked 1000x before but I am really on the fence about what size to move forward with. For reference, I am pretty thicc (6'0, 220lbs) with an atheletic build. I have XXL legit stone island pieces and they fit me perfectly. I wear XL in nearly every other brand (XXL occasionally if the fit is small). I wear a 44R suit and have a 17 1/2 - 17 3/4 neck size.

I initially purchased a XXL in both Black and Grey.. my intention is to wear them to work occasionally (over a dress shirt). However.. after seeing QC's and retail product pictures, I am starting to think I need a XXXL to be able to wear it as a layering piece. I just reordered both as XXXL on superbuy as I would prefer not to have a super tight sweater that I can't fit a dress shirt underneath.

Can anyone confirm that a XXXL is the way to go? I know many people may have not ordered one this big... any advice would be much appreciated.