Helpful NPC Thom
Adventurer
Catholicism is not problematic.Love your idea.
Cautionary note- I love Dante's Inferno - weirdly, I was introduced to it a long time ago by Niven & Pournelle, who wrote a sci-fi book based off of the classic.
....but as I'm sure you know, there are some aspects of it that would need careful consideration and change before mapping it to a D&D game given that it was based on a very different mindset. The First Circle (non-believers) and the second Ring of the Seventh Circle (suicide, attempted suicide) immediately spring to mind as ... problematic.
Even trying to map out what is considered lustful might be odd. Just saying- maybe take more of the gist and the atmosphere than the facts.