I feel that this system is an excellent basic system especially for a small room. It can be added to sourcewise with the addition of a preamplifier and tuner, SACD, and vinyl sources. One could subsitute a fine low power tube amp for the Aleph if one prefers this sort of sound. A balanced amp, like an Aleph 5, might provide some sonic advantages with the Wadia which sounds best with balanced cables, IMHO.
I had the same power amp/speaker combo for a while and was disappointed by the lack of bass and dynamics(nice midrange though). I now use a Spectral DMA90 which seems to give me more of everything (suspiciously good!). I suspect you could do better with your interconnect. Also Goertz MI-2 speaker cable works well for me. After 10 years of mucking around with Quads they still seem to get better. Good luck Ron