Nevada Wolf
get ahold of Alex. He was in my neck of the woods earlier this year (New Castle, Pennsylvania) as a participant in the 11 day Iron Butt Rally.
Alex can give you wisdom that only those that do it gain from it.
Basic rules
lessen caffeine couple weeks prior
don't change anything on bike before you head out
don't try a new helmet or new boots before you head out
hydrate
pick a route you can keep high average like I-70
Keep the sun at your back for as long as you can..
short fuel stops..fuel, walk around bike check things etc. 5minutes tops less the better
keep helmet shield clean, mirrors clean bike shield too if its tall
take appropriate gear for all conditions you encounter. Hey you get cold you stop put on electric gear you may not make BBG time but you make it other scenario you get cold reaction slows down a lot you make a mistake now ride over..
Just some thoughts..check with Alex. Wardie