that outfit is fine for fall, as it's cold but not too much.
i've owned quite a lot of suspender tights for a while now. i find them really original and feminine, but also somehow daring. people stare a lot when i wear those, so i always wonder if it's because they're not used to it because they might think i'm wearing real garter belts or because i'm not wearing them right.
anyway, the real challenge is wearing them without looking too trash haha.