The Dyn Focus 110s are fantastic speakers. Im not familiar with the amp, but you'll need plenty of juice for the Dyn's. They're 4 ohms and not particularly sensitive, so be careful. Feel the temperature after driving them to your usual listening levels for 10 mins when you audition. What are the specs for the amp and check if it's comfortable driving 4 ohm loads in the manual.
I also agree with the poster above, they can be boomy in the wrong room, so press for a home demo if poss.
I have no experience with the Focals I'm afraid.