Hmm, what are light's SSR ascension options anyway...
FLB draconic eye staff
FLB Sol gun
FLB Pride staff
Hammer from Phoenix 2nd Reprint (it's Defender/Ascension, caps at 2130 atk)
Glaive from orichalcum exchange (Assault/Ascension, caps at 1770 atk) (4 orichalcum to 3* it)
Tishtrya spear

If you're remotely interested in ascension for light, just 3* the damn staff every time Pride comes around to give yourself the option.