Need Help On Amp Selection

Recently sold my 1998 Legacy Focus, for very reasons it was time for a change. I have placed an order for Salk Audio Song3 Encore. I am building my system around these speakers. My current amp is a McCormack DNA-1 amp. My dilemma is the sensitivity rating of the Focus was I believe 94.......the Encore3 is 87. The Mccormack is rated at 150 @ 8ohms. I listen to classic and hard rock, along with some metal.....I do tend to crank it up at times. I am scheduled to send in my McCormack for a complete rebuild/upgrade. I have no doubt the quality of the sound form the upgraded amp will be outstanding, I am concerned about the lost top end due to the sensitivity difference of the speakers. The rebuild will take my DNA-1 to approximately 200W @ 8 Ohms/400 @ 4. If I knew the DNA-1 would provide enough top end I would go that route in a heat beat. SMC Audio has assured me the amp will produce enough power with the new speakers. If needed I could spend in the neighborhood of $7500 on either a brand new amp or well cared for used one. I have not listened to any amps yet, but a couple possibilites would be Anthem STR....used Pass 250.8.  Any input would be greatly appreciated.