What healing options will we use for our characters?
I don't think the golem is some kind of raid boss, so we should be able to take him down. I think he'll fall apart after just a couple of wind spells. However, I don't see the point in taking melee characters with poor defense, because it will just result in losing a character for a couple of thousand experience points for those who survive, and corpses, as you know, don't gain experience.
We could, of course, do a kind of "final test" and have my character visit Gungnir to ask how prepared he thinks our group is for the battle with the golem, and then proceed based on that. To put a final end to this debate. But that's only if we decide to go.