@SteepApproach,
dunno how many crew members you have right now. But, how about adding one more? Even in corporate things are not set in stone if you are that busy. Imho the cost is negligible compared to the total costs of operating a large jet. From my experience, corporate flying does not have the financial pressure like AOC flying. Have you tried talking about your situation with your employer? That might improve everybody´s quality of life considerably. A sensible employer should recognize the value of a content employee. At least, if he intends to keep him long term.