if not for the rare possibility to get tyrant belt!! i would save the belt for last.
ring first, as an obvious increase to almost every other ring in the game
earrings second, because it has more scroll slots to finish
pendant third, for two reasons.
if a perma pendant goes on sale, its possible a player might buy. imo its too good to pass up.
if just a 1% chance, you will get a tyrant belt and star itand belt last.
six months ago, i never dreamed i would get tyrant pieces, and now i have cape and shoes!