You know way more than I do about this stuff, but my friend recently used some free online program to design a custom (large) closet. Very efficient. Just a thought. For your vinyls and what not, maybe a wall library, with a sliding ladder.
Then you go Hugh Hefner and buy a nice silk robe. Maybe with your own twist with smoking pipe, spectacles hanging on the end of nose, and some bunny slippers. Pink of course.