Hey there. Glad to hear you're enjoying the Cross Check. I might spring for a bike fitting just to be sure everything is adjusted well and I would perhaps consider drop bars. You might do the fitting first, ride some more and if need be get drop bars later. The only issue I see with that is that a fitting include measurements of your body angles when you are holding onto the handlebars and they may be different going from flat bars to drop bars. I had a fitting on my hybrid where they wrote down all the measurements, etc., and when I asked if those measurements could transfer over to my new Cross Check, the fitter said "No" , because with the different handlebars the angle, positions would be just too different. Good luck and keep us posted.
"Opportunity is missed by most people because it is dressed in overalls & looks like work" - Thomas Edison