If diy is not out of the picture, a two way genelec style floorstander with beyma 12p80nd midwoofer and waveguided seas t35 tweeter is what I'd go for.
Quick question: can you take out the LEMO and XLR connectors from the Sennheiser HD800 balanced cable and reuse them for another cable or are they glued?
IMO you can't have enought attachments for the Kirby ... like the one for taking out dust mites out of the couch and the one for walls, and the furry one for books.
Hfx micro case and heatpipe cooler, cheapest itx lga1155 motherboard that has the ports you want and an i3 2120t, corsair m4 ssd, 8gb ddr3
or if you want to spend wait for ivy and you can run a quad core fanless with the asus z77 itx deluxe with wifi, bluetooth, msata ssd and 2.5“ storage hdd in the same fanless case
there's a battery powered version too (dac talent bd), and an upgraded output stage for it (ivc-01) ...
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Now they have the 999$ server model mini with two hdd's and leopard server included.
Put 2x2tb in there and run raid1 for data safety ... a really nice music server.