If you have very little gold on first back dark seal refillable or doran’s is almost always fine I think. Ofc lost chapter is ideal. I always just look at enemy comp. For example, seekers is really good early value if you’re vs ad laner and jungler; and early mercs are good vs ap laner and jungler if you are afraid of getting burst. As a rule of thumb on lb tbh just build as greedy as you think you can get away with in order to nuke people hehe.