Their locations are never random though. Where they are, they'll always be.
I think on a second playthrough you can arrange your management of your inventory better and really pick carefully what item you need each time. IMO you're bound to improve your results, as long as you remain as thorough as in your first playthrough.
How better to manage my inventory? It's not that i waste any boosts. I never ever used them besides for the quests. At least, since they are not random, maybe someone remembers where they found one. Anyway, thank you for all the help.
