Hi Davide, It certainly sounds like this would be a "smaller" project for you XD. But from the sounds of it you are incredibly experienced so as long as you are alright with my skill level I am happy to discuss more!.
And I 100% agree with you on the subject of AI, as a general artist I do not support the use of generated materials or art and do not use them, as it takes away all the years and effort I've spent refining my knowledge!. I make everything handmade as you describe.
This project is just an opportunity for me to practise my 3D skills and game design, although I am trying to break into industry one day It will be completely relaxed as I explained I have no deadline in mind, just enjoying learning from the experience.
If you are still interested do message me on discord and I will send you my rough pitch deck for my idea ( however we do not have to go with this it is just a starting point atm :) )
Thank you!