Re: advice for storing and diapering two floors
We also didn't spend as much time of the top floor so we didn't have to do half in half but we did have 2 setups.
Upstairs we had the pile of nighttime diaper and a pile of inserts. Since we did AI2 type systems (GroVia and prefolds and covers) the last cover taken off in the evening generally be the first the next day. If it needed to be washed, I would generally have to just remember to bring up a new one after bedtime (i always had to check the inserts and make sure it was good either). We had a changing mat on a low wide dresser and a bin with the diapers, wipes and a spray bottle. I hung the "hanging wet pail" (basically a larger wetbag only made of PUL) on a hook off of the hamper.
Downstairs we had the changing mat on the washing machine in the bathroom. We had a bin with the majority of the stash and everything we needed. Another hanging wet pail.