Most folks would keep the sm81's. I wouldn't, but that's just my taste. I might hang on to the beta52, but knowing me, I'd rarely use it on kick drum. Maybe the D6 could stay if I was recording a lot of metal. But I don't, so I'd nix it. I'd sell the RE-27 for an RE-20... unless I wanted a thin and pinched-sounding mic that vaguely resembles an RE20 for some reason...
I'd buy: Beyer m160, m201, 4050's or 414's, 4047, RE-15's, MD421, SM7, ATM25's... you know... some good mics
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Each of these mics costs less than $1000. Most cost less than $500. Each of them are far more useful than any of the mics you have listed. Please don't buy the 2 mics I listed that are no longer in production. You'll just drive up their prices, and I still want to pick up a couple more of each. I'd also see about getting one or two "nice" mics. Whatever you can afford. There's a lot of decent stuff around $1k these days: Mojave MA200, the entire Peluso line... incredible? No. Totally useful and miles ahead of anything you have? Yes.
I'm sorry if me response seems disheartening, but that's just me being honest. In truth, it's entirely possible to make a good sounding record with the mics you have available. However, when I look at that list, I only think of the many mics that would serve the same purposes much better.
One last thought: Why does everybody have to own all this sh*t these days? I'm consistently amazed that people will spend thousands upon thousands of dollars on mediocre gear, when there's already so much amazing gear sitting killer sounding rooms that can be booked for next to nothing these days...
Then again, I probably shouldn't talk. I entered the field of engineering by being a kid who saved his pennies working at a music store to buy a remote multitrack rig and a slew of mediocre mics at cost. Looking back on it, I think there are smarter paths. Paths that are better for the fresh-faced recordist, and paths that are better for the overall health of our local musical economies. I just didn't know it at the time... nobody told me! I only knew what I read in magazines: "Buy sh*t. It's the only way!"
Rebel!
Good luck out there, whichever route you choose.