Hi LaFemmeDuLac
Well, we do have an area just for paintings that may be unsuitable for non adults called “After 9 O’clock”. This area can only be seen by logedin members of the forums, not casual visitors.
Now, that doesn’t mean that absolutely anything can be posted there but it would be a suitable place for the types of work you describe and what we in English would call ‘Life Drawing’, or nude studies.
In truth it’s an area of the forums that sadly is not much frequented these days (and I confess I have only ever posted one thread there myself! Moonlight) but it would be good to see more happening in that area of the forums again.
So maybe start a new thread there for your Life Drawings.

And yes sadly hiring life models for drawing is expensive, I think everything is these days unfortunately!
But I would encourage any digital artist, or would be digital artist, to get away from the computer and do some life drawing with a real live model if they can.