I rediscovered this post. I've fixed some of the items.
For sound, I installed a wee soundbar with subwoofer. The bar is installed under the TV on brackets and the sub (well, woofer module, really) is under the platform I built to turn the dinette into a couch. Still, no obvious way to get FM radio into the soundbar, but I can stream music and TV from my phone.
Window in door is done, but a little awkward with the screen in the way.
FR could move the furnace and water heater around a little and get more room for a pass through. As is, my R-dome will just go in and the front door shut.
I should have clarified, a stove vent that looks attractive and not shade-tree, which is beyond my fabrication skills.
I have looked at the wire shelving others have done. I may try that when I can find the frame supports to drill into.