I've also decided to downsize, but on the basis that this is an expensive hobby that i cannot afford to continue! so after some soul searching and perspective taking i decided to only have 7 or 8 fragrances in my wardrobe. I much prefer a smaller wardrobe, it makes the fragrances i have more personal to me, and gives me a reason to only buy the 100ml or higher bottle sizes. My small collection makes the fragrances i have seem less of a hobby, and i can enjoy them a little more. I dont get bored of them either, i kept the scents i love and mean something to me on a personal level, rather than keeping them because it smells ok.
BTW, your collection is great! cant go wrong with London