oohh, that sounds like fun. That is a great lineup. The thing with Elac is they can change a lot depending on what else is in the system. The same can be said about a lot of speaker lines, but IMO with Elac, that effect is more so. Hopefully the dealer knows how to optimize the Elac's at with other gear in your price range. I would imagine your Valve Audio Pred. should be very good with everything.
I drove my Amphion with a Cayin KT-88 Integrated. Great sound, there was no reason to get rid of that setup other then I just like to try new things and see what happens.