Oh, right. There is also option of slotting holes, as Deacon mentioned, but i somewhat dislike non-reversible mods. KW/ST shocks have top hole pre-slotted. IIRC also koni yellows in full set, not just inserts, have larger then stock upper hole. Word of warning, if deciding to dremel/slot strut hole, then to use stock bolts, eccentric camberbolts may slip there, people advise against camberbolts usage in slotted holes.
If one needs more camber probably for track purposes, then imho worth front camber upto -3 at least (and rear -2.5). For rears i'd advise to get LCAs though. Cheapest of them are not that much more expensive (OEM stamped steel alikes clones like SPC/Whiteline/Eibach) vs eccentric rear LCA bushings + shop time for tedious adjusting with those bushings. If you mentioned stock height, i guess more rear camber from lowering not exactly best option to gain rear camber, thus better get rear LCAs right away.