gosh, i couldn't imagine fooling around with cleaning extra stuff ahead of using it during brew day. the only 'cleaning' i do while brewing that i don't want to do in advance is sanitizing the carboys and whatever hoses i will use downstream of the chiller.
i do cleanup as i brew but that is so i don't have to do it the next day or something like that. i dry out my hlt while the wort is coming to boil and clean the mlt while boiling. i'll also clean the hoses i won't need during chilling and the water pump during the boil. after the yeast is pitched and the carboy is on its way, i'll clean the boil kettle, wort pump and the last hoses.
i clean my kegs as they kick but don't sanitize them until i am ready to rack in a new beer. i clean my carboys right after kegging. similar with starters, i clean the flask right after i put the starter into mason jars to settle. then i don't sanitize the flasks until i am ready to make the next starter.
doing ro water the night before is a total no-brainer. i used to do it overnight before brewing but got too paranoid that i would oversleep and end up with water all over the floor (i fill the hlt directly from the ro unit without any tank or float switches).