if you have the money for it then yes it is enough but bonfire on dungeon really takes away 10 mins to do a full clear.
i got a good party from matchmaking just now and we didnt have enough time for the final boss on lv 145 dungeon just need an extra 5 mins to kill the boss and the mobs around it.
composition was linker/chronomancer - cyromancer/psychokino - peltasta/hoplite - hoplite/cata - archer/qs (me)
we could clear it fast but the hp of our tank (15k hp) is always low every 2 lures (8-10 mobs per lure)
so unless alchemist pots cost 1k each for the lv 5 then its not a good investment to buy it and use it on dungeon.
that could also be an additional recipe for alchemist they can improve it to recover 22/24/26/28/30% hp.
for me i dont really have much of a problem but not having a healer and have to rely on bonfire and pots to waste 10-15 mins is a bit sad