If you mean Tachiyomi, then yes, absolutely safe

For the potions, it’s a step for each rarity, Normal is 10hp, greater is 20hp superior is 30hp. Makes sense because it’s the same potion, why should it’s effects vary from use to use.

Some bonus actions can be taken if you want to sacrifice your whole action.

Potions have a straight hp gain instead of rolling, i.e. superior healing gives 20 hit points back.