Hey Orange Frog, welcome to the forum
I'm wondering why you think you need to upgrade? If the current set-up is getting notoriety, why spend more money on gear?
If the only thing I shot was Macro, I could get rid of half my gear
My only reason for needing faster lenses and higher resolution is because of our event coverage and needing to shoot in low lighting situations and fast action.
I'd stick with what you've got and spend any profit on the presentation and printing which will probably even earn you more money