Responses from alucard19

Try the Benchmark LA4 preamp. great reviews and I own 1 also. You might also want to try the Denafrips Hades which I also own and they both sound great, both use relay based volume controls which is the way to go.  
Phono pre amp recommendations? - upgrading from ICON AUDIO PS1 MK II
You might want to try Andros II Phonostage | Zesto Audio you can sometimes find them used for around $4,000.00  
Requesting opinions about 4 specific amplifiers
You might look into Coda amps, or an Anthem P2 power amp  
A switch for 3 amps
You can try¬† Welcome to Mapletree Audio Design you will want the SCC1 system configuration controller, I had one made for me custom, by Al Freundorfer¬† I use it to control 2 tube amps, a CD player, and turntable hooked up t... 
REL S510 or S812
You might also want to look into the HSU VTF-3 MK5 HP Subwoofer It works very well when used with a 2 channel set up and also if used in a HT set up.  
The receiver was my intro to HiFi! What say you?
My first big receiver was (and still is) the Kenwood KR8010 along with the Concept 2QD turntable from Pacific Stereo, I still have both of them and play them on a regular basis in a dedicated listening room, along with a 20+ years old pair of Acou... 
Advice and recommendations needed for a turntable rig...
You might want to look at this turntable from music direct Denon - DP-3000NE Direct Drive Turntable - Music Direct heavy turntable that has had good reviews with a removable head shell if you want or need to change cartridges.  
Best Covers
How about Siouxsie and the Banshees cover of Iggy Pop's The Passenger.  
A good cd transport for my Chord HugoTT2 DAC with Chord M-Scaler
Why not look at the Rotel RCD-1572MKII I own 3 of the RCD-1572 originals + a Sim Audio Moon 360D and the newer model 1572MKII is even better or if money is not that big of a concern you can try the new Rotel Diamond Series DT-6000 CD Transport.$22... 
Best Covers
Deep Purples cover of Hey Joe  
Best Covers
Hell's Bell's, By the Dandy Warhols, Dandy Warhols Hells Bells - Video Search Results  
True 8 Gage banana plugs
Check any of the Furutech banana plugs they will take up to 5.5mm wire diameter, which is around 4 ga. so 8 ga. wire is an easy fir in the Furutech banana plugs either straight or 90 degree also the 90 degree plugs spread open when you tighten the... 
True 8 Gage banana plugs
These are what I use and they work great FURUTECH FT-212(G) hi-performance Gold-Plated/Pure-copper Banana plugs-set of 4 | eBay  
Recommendations for 7 channel amp
Try Emotiva BasX A7 or have them custom build your 7channel amp with the power modules you need.  
MM Phono Stages With Greater Than 40 dB of Gain?
Pick up the Zphono XRM Phono Preamplifier from Parasound with MM gain of 40 or 50dB they only cost around $500.00