I hope you get to take some pics and share, maybe the thread below. 
Other than nutrition, is you bike and kit pretty well sorted? If you have an 11-28 cassette for example, you might be wishing for an extra gear after 100+ miles.
You also mentioned being slower due to bumps at the end…what are you running for tires? If you usually run 25 for example, maybe it’s worth bumping up to a 28 or 30.
Just a few ideas I’d be worrying about! 