Please forgive me, I just can’t help myself. You’ve got a great space to merge your 2-channel and HT into one system and have the best of both worlds with no more added complexity. I’d suggest selling the Klipsch L/R/C speakers and getting a better center speaker that’d be more inline with the quality of your 2-channel speakers. Then all you’d need is an AVR with front L/R pre outs to run to an input on your stereo pre and you’re done — switch between HT and stereo just by changing the input on your stereo pre, and for critical 2-channel listening the AVR is completely out of the signal path. If you’re running tubes for 2-channel this doesn’t work as well, but you’re all SS I think you’d be much happier all around with no compromises necessary on either front.
Ok, now that you’re probably mad at me I’ll try to make amends. I’ve also heard very happy comments about the Sonos soundbar, but for about $200 the Yammy recommended by @loomisjohnson above would probably serve you well on the cheap. Hope this helps more than hurts, and best of luck whichever way you go.