I have similar problems 44" chest 35" waist 40.5" hip 16.5" 5'10" height and 188 lbs
I have found only two brands in the UK market that suit my shape: Gul (make surf wetsuits) and O'Neill
O'Neill is the only brand I can wear 5 and 7 mil suits without gagging their size chart for once is reliable you can check it here
O'Neill Sizing Chart - Mike's Dive Store, Chiswick, London
You can be guaranteed that if you measure yourself properly and there is a suit in range it will fit like a glove.
I have found only two brands in the UK market that suit my shape: Gul (make surf wetsuits) and O'Neill
O'Neill is the only brand I can wear 5 and 7 mil suits without gagging their size chart for once is reliable you can check it here
O'Neill Sizing Chart - Mike's Dive Store, Chiswick, London
You can be guaranteed that if you measure yourself properly and there is a suit in range it will fit like a glove.