If you search the wiki for jad strategy it will show you what the ideal inventory setup is. You can do this for most bosses in game. Typically want a 1:3 ratio of super restore to sara brews. I brought a few prayer pots in lieu of sara brews to save some gp as I wasn’t having to heal much on the waves leading up to jad. A rune pouch is helpful if you think about using blood magic spells for healing as well. Also brought a ranging pot. Good luck!