I really like sour gummis as well. Unfortunately, on the bike they give me GI discomfort.
Very good idea. “Old” potatoes are better for certain dishes like potato salad or German-style fried potatoes. (I think the starches break down a little further, etc.) Oh, and that also works with sweet potatoes, too.
This is definitely an option if you want to try meal prepping ahead a little. You can also boil some chicken in advance and put e. g. shredded chicken into said potato salad or so.