You're already pigging out on Ah so not sure what else you could do other than my previous suggestion. :B It almost seems that you can have too much battery AND solar in some situations. With our camping style, it works out to just one cycle per trip. Maybe you could shoot for that. Probably not possible given your space for batts. Maybe you can up your solar so you will charge up in a day or two.
If I were camping more than just 3-4 days, I'd still go for one cycle per trip even if I had to use solar to get there. The thing is if I have cloudy days then that throws off my cycle per trip goal. If I add more batts then I don't need solar.