I run a Mac 4100 with my La Scalas - your amp and speakers should work well together. It seems Mac gear and Klipsch get along quite well.
The Speakers will not need very much power - 10 watts on La Scalas will drive you out of the room. You'll be fine. The Loudness control will allow you to add in the "missing" bass without a sub.
Try it, I think you'll be pleased.
I've always preferred the cherry and as much as I move mine, I'd have to agree with the majority here that black would look best in your theater.. The copper drivers should really pop with your color scheme. Great looking room!!
I'm surprised the black finish is winning the votes. Always thought cherry was the preferred. But I understand the color scheme of the room does lend itself to the black finish. which is fine. The cherry finish to me always screamed more high-end. But I could live with either for sure. thanks everyone so far for your input. Appreciated.