you distance plan looks good... since you're riding with men mostly I want to point out one thing that I learned a couple years ago... and that is that men and women absolutely store glycogen in the liver differently...

what this means is that men can carb-load quite successfully... and the majority of women can't. This is important because to NOT BONK it is critical that you take on more carbs than the men DURING a ride... I'm not suggesting that you gorge, but I am suggesting that you eat something at every sag... and I personally have found that riding with Cytomax (or whatever sports drink) helps me tremendously... it's only 100 calories per bottle but taking on that little bit of carbs and electorlytes regularly thru-out the ride is absolutely noticeable in my ride performance...

often, men will skip the SAG stops because they have carbloaded the night prior but in my opinion, women should not, unless they have food with them and are eating it on the bike... I take on a little carbs every hour for any distance ride... and then I feel great afterwards!

definitely experiment and see what works for you... but don't let the boys badger you into not stopping... I do not bother carb loading the night prior to a distance ride... I just have complex carbs that AM and then take on a little bit every hour...