I think it's completely doable.
As for what foods to eat, I would focus on getting a good mix of carbs and protein, as well as a little fat. Try to get something into your system immediately after the ride ends on that first day. Chocolate milk is my go to post-ride "meal," but anything with a mix of carbs and protein will work, e.g., a peanut butter and jelly sandwich. Pair it with a 20 plus ounces of water. Eat a bit of salt, too, especially if it's hot out. Then eat a filling dinner.
During the ride, eat what sits well with you. e.g., Simple carbs, bananas, trail mix (or anything with a bit of salt). I use a top tube bag for long rides and bring with me something cut up in small bites (Payday candy bars are my snack of choice) that I can easily graze on in between rest stops. For breakfast on either day, again go for things that your stomach easily tolerates. I usually stick to fruit, yogurt and oatmeal. Pancakes, toast, and the like will do to. My stomach doesn't react as well to lots of protein before or during a ride, but every person is different.
From my experience, as long as I eat filling meals and at regular intervals on the bike, I have enough fuel. It's dehydration that will get to me first. So my advice is to drink, drink, and then drink some more.
Good luck and be sure to give us a full report after the ride.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher