just do exactly what PURE h20 has done, paint your wood with whatever you like and then buy a plastic boot tray for hoses and cloths. That way the paint should last a lot longer without chipping.
keep in mind when your kitting your van out to make sure everything you hang ( e.g poles, bottles, ladders) are all secured well so you don't have things bashing around! I HATE rattles and knocks when im driving it makes me paranoid.
also find a way to keep your hose reel secure whilst on the move, if your like me and lift it out each job I just use a bunjy to hold it in place.
last but not least we want to see progress so get a few photos in progress