You should be able to survive fine there. The question is "How are you going to get there?"

Either way the mobs there are;
First floor; Beetles Lvl 23+
Second Floor; Scorpions lvl 50+
Third Floor; Snakes Lvl 67+

The good thing about it is the higher you go the higher the mobs are so you can stay there and train for a bit then move up to the next floor when you get to the right lvl.

I don't think the scorpions are resistant to bows. =.= worth trying I think they are the same as all Mobs. But don't take my word for it I've never use bows there before when testing training. Most bows use STR. Higher the STR less chance you have to miss. That's why you don't see mages using Volley/Arrow Rain skill. But when training its good for mages since their poke is weak and Bows do not break like Guns do. (guns break after all the ammo is used up)