Thanks for all the advice and suggestions. I ended up eating a decent sized bowl of oatmeal (slow-cook, steel cut kind). I had plenty of energy, which I supplemented with a couple fig newtons and a piece of watermelon at the rest stops! It was a GREAT ride - even with the hills. (Had to walk one hill - 8% grade was a bit much for me - but rode all the rest for 24 miles, so I was really happy with myself for that!)

Thanks for the support. I'm learning so much from TE members. All y'all are lifesavers as I try to re-acquaint myself with this wonderful sport.