You might get back 10 amp/hours per day from the panel. That's a fairly optimistic amount! So since you are using 55 amp/hours per day, and generating 10 amp/hours per day, your net is you are removing 45 amp/hours per day. Since you have about 60 amp/hours available, that means you'll probably start over draining sometime in the second night. So, I'd still only count on 1 day.
Now, of course you can reduce your loads. Say, turn off the GPS
when you're at anchor
. Maybe only run the stereo for 4 hours a day. Then you're starting to be in the 2 day range. As you may see, not using amps is a WHOLE lot less expensive than trying to replace/generate them.