You don't "need" it... the stand would be neat for cleaning the cell, but not at $65 bucks. Since I doubt you will need to take it out in the winter because of your location, you won't need the bypass tube.
I spent $25 on my hayward cleaning stand, and it sits in my cabinet because my cell has never needed cleaning.... Thanks to this forum I maintain a slightly - CSI and my cell still looks brand new a year later. Maybe someday I'll get my $25 worth but I think I wasted my $$$ plus as said it's only a convenience, it's plenty easy to clean a cell without. I can't think of any reasons I'd need the other 2 items