Honestly, just ride your bike and build up your mileage as best you can. Short of commuting, I don't know that there's a need to do multiple training rides in a given day rather than one long(er) ride. For building endurance, I always found it helpful to do long back-to-back weekend rides. With enough of those under my belt, I was able to do most rides comfortably, be it a weeklong tour, the two full days at the Horsey or RAIN.
There is a relatively short hill on the Booty route, so you might want to incorporate some climbing and hill repeats in your training, too.
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