When are you too large for an early A body....

Nobody has the temerity to suggest the OP lose some weight?
No offense meant but unless you have a specific medical reason, you should be able to shed the weight. Your back and knees will be grateful, I swear. Each 35 lbs you lose has the effect of adding an INCH to your pecker due to fat loss. Your blood pressure will drop, the risk of diabetes and heart disease drops too. Think of how much better a car performs with less weight to move.
Best of luck to you. You are stronger than you know but have to make the effort to know for sure.