I am biased because I have been in the audio industry for 29 years and work for a dealer.
Proper matching is the most important thing you can do and if you could find a great dealer that is good at this you are better off.
The McIntosh MC1.2kw along with all McIntosh amps are way over rated. Most often people are the victim of nostalgia where they grew up with a dad that had them or they grew up always wanting one.
When it comes to sound quality they are very dated so today you can get something as good for far less or something much better for the same price.
They are very compressed and electronic sounding with a lot of harmonic structure missing in the sound. They are grainy and dark at the same time. Parasound has this issue as well but for 1/6th the price.
I cant recommend an amp or amps because I dont know your system but the industry is full of small incredible companies that build legends in the making like Musical Design, Clayton, Tube Research, Intuitive Design, Odyssey, David Berning, Gryphon, Electrcompinete, Aesthetix, Thore, and even some big names like Rowland and Classe.