I know it's been said before but get a coating on that OSB sooner rather than later... MOLD MAGNET!!
Even a coat or three of shellac primer would be good, i'd hate to see all that awesome work have to get redone before you get a chance to use it properly. Once you fire up the compressor the humidity will spike in there and you will develop problems quick, also when the board gets damp it will swell and lose the bond between the leaves.