I would recommend a Sony 850D or a Samsung KS6300.
The 850D has a decent input lag, as well as a better OS (Android TV) and better noise algorithms (meaning you won't get a lot of nasty artifacting when things start moving too fast). Plus, it's a 10-bit panel, so HDR.
The KS6300 on the other hand will have more conforming blacks and a lower input lag. The noise algorithm isn't as good, it's only an 8-bit panel, and SmartHub is useless if you're pairing with a console. Also, the 6000 series isn't super reliable; get an extended warranty.
As for your consoles, they make wallmounts for consoles now. That's how I intend to have my front living room set up after I get a couch for it. I would ditch the BR player (it's useless unless you're just dead set on Dolby Atmos), and I would consider ditching your TV service for SlingTV or PlayStation Vue (Vue has more channels, more simultaneous streams, DVR, and a wonderful Guide when using PS3 or PS4). If you're dead set on using those, just grab a set of wallmount shelves.
I personally have two living rooms, but only one couch. This means one of my two 4K TVs is just hanging out for the time being. In the active living room, though, I'm running with an XBR55X930D TV, a PC, a PS4, and a Wii U. I have a ton of consoles, but not enough r- that's a lie, I just don't wanna set them up (it's a hassle and it FILLS my massive TV Stand to the brim, so nuh). The TV has HDMI2.0, so the computer is running 4K@60hz (can't play games like that, of course; only a GTX950 at the moment). The 930D is almost identical to that 850D, but it sacrifices input lag for deep, accurate blacks.
My other TV is an older XBR55X900A. Yes, I have two 55" 4K TVs. When I get another couch, I'll also grab a Retron so I can retire more consoles. At this time, only the PS1 and PS2 are retired, as I have a BC PS3. My Gamecube would be retired were it not for the usefulness of its GBA adapter, otherwise the Wii has replaced it. With a Retron, though, I can retire my NES, SNES+Super Gameboy, Master, Genesis, and Gamecube+GBA Adapter. Then they'll just be on display.