Need help with going with Integrated or preamp for Focal Diablo EVO

I have a new pair of Focal Diablo Utopia Colour Evo's coming next week and need help with where to go to run them. My initial plan was to use my McIntosh C2700 and MC452 with them until I had the realization that the C2700 is priced about 6500 more than it sounds, so I returned. Now I have a credit and was thinking about going with an integrated and figuring out what to do with the MC452 later unless a preamp paired with it would perform better than these integrateds .

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