Analogue only preamp ideas? - no need for internal DAC!

Tubes in a preamp take 20-30 minutes or so to warmup.  This is irrelevant for pass through.  You will find that until the tubes are warm, sound will be a little flat.  
AVM tubes should never need replacement and were explicitly designed for AVM.  There are no alternatives.  Expectation is a minimum 10K hours

Rogue or other brands use standard tubes that are rollable.  You should expect between 4K -10K hours out of standard tubes.  
You have to be a little cautious in pairing tube preamps with SS amps.  The AVM is adjustable and is designed to pair with SS or Class D gear.  The Rogues are well suited for pairing with SS.

i have a customer who is considering trading in an ARC SP20 which is a great preamp that will work with SS gear And would work well for you.  The SE 4 input is the home theater bypass.  I could help work out a sale between the two of you or buy and resell the device.  

The McIntosh C70 is awesome but doesn’t offer home theater pass through.  Same issue with the C22.  
If you want HT Passthrough with a tube stage, check out the AVM PA 5.2.  It is in the same price range as the C22 at $5495.  They offer a phono card that you can add for $600 if you wanted a phono stage added to it.  This can be done at a later date.  German made, AVM offer superb build quality and incredible sound.  
Rogue is also a fine choice and I know they offer pass through.  The RP7 or RP9 would do a wonderful job in your system.  The RP7 is $5K, I forget the price on the RP9.  
I am an AVM dealer.  I have no relationship with Rogue, just am a fan of the brand.