You can go really low before you need the replace the swaybar endlinks with something adjustable, probably lower then ether of these coils will allow on those spring rates.
I have a set of PBM Lower control arms that i picked up because of the price mostly, also because they have an optional lower mounting point.
https://store.partsshopmax.com/shop/.../ZNC6RLCA.html
but i don't really have any input on what coil to go for, apples to apples. I'm fond of Tein