Pallas I hesitate to add these thoughts.... but here goes.
I've owned an acoustic baby grand in the past, and while there are some good things i remember about having it, I mostly think about the things I didn't like about it, and these things keep me from even thinking about getting another acoustic piano.
Most of what I play is for me, what I want, when I want, how I want. And, for me, it's important to have my personal "musical space", preferably in my head, between my ears. A digital piano with studio quality, comfortable, headphones, make this possible. On those occasions when I want others to hear what I'm playing, I have some nice speakers. I wouldn't practice half as much if I couldn't shut myself away under the headphones, free from outside distractions, and no thoughts of others impressions, or whether I'm annoying them with my constant repetitions of a tricky part, over and over, for days on end.
My current digital piano is ten years old, but it does most of what I want. My only consideration for an upgrade is the Kawai MP11se. The key mechanism is wonderful and the onboard sounds are top notch. I've heard the MP11se through powered monitors, 12 inch three-way, and it is close enough for "real" for me.
One of the problems with an acoustic is that it only has one sound, no matter if it's a great sound, and I find different sounding pianos give me different vibes, inspiration. As a painter, you could paint a lot of things using just Burnt Sienna. But, the fun factor of all those different colors opens lots of doors.
Have you played a Kawai MP11se? With a pair of studio quality headphones? Maybe give it a try before making that big decision.
