You may want to look at getting another pole,ie a24ft one for the 3rd storey stuff, possibly an IBC if your having a static system,in which case you'll need a sub pump too. Be prepared to get a booster pump too if your in a low pressure area. I also upgraded my ro from the 100 to the 200, from the off, low pressure + 100 ro =nightmare. You might be lucky though and not need any of the above. Good luck with your new toy, it gets easier as you go along