At this far into the game, Iridium is the least of your concerns. Qi Gems are worth 100x more than any Iridium Node you find, and you can always trigger the switch at the entrance to activate the Dangerous enemies afterwards.
Listen, I did this too to get to level 100, but I didn’t pass nearly this much iridium. When I was doing it though I didn’t have the galaxy sword and could barely survive there. Now that I’ve got it I’m definitely going back to get all the resources.
I'm proud to say that last Monday I made it to level 100 of the Skull Cavern only using three staircases! Granted I was on year 4 and had a lot of stuff lol but combat isnt my forte and I'm still proud of myself
Omg, I reached the level 100 for the first time a few weeks ago on year three, I used like 20 staircases and I was suuper proud of myself too! Your achievement is amazing, don’t downplay it, congrats! 🥰
You don't even need stone anymore to get loads of staircases. You can trade in 1 Jade for 1 staircase every Sunday at the desert trader. You'll be golden if you just set up a whole bunch of jade crystallariums.