Dave, it is hard to say which choice will yield the best result. Since you buy them form a dealer, can't you do a test?If he is not willing to come over with the units, maybe you can take your speaker to his show room. Nonetheless, my advice will be to get the A-65, but only because it will finalize the search for an amp.
Bvdiman, thanks for the additional info regarding the "pre vs. no pre" issue. I am certainly not surprised to hear that the sound is better when using your pre-amp. After all you use one of the most expensive pre-amps available. It would have been terrible if things where different. :)
Regarding the pre vs. cd player upgrade, it will be much more expensive to upgrade my pre-amp than to buy a DP-800/DC-801 combo. However, while looking at Finite Elemente rack that could accommodate all these Accuphase boxes, I have realized that I actually do not have enough space in my room for such a rack. So, I need to solve this problem first.
Regarding the HS-link cable, I have stumbled on another forum (I've forgotten where) on a thread where you have talked about the top of the line Audioquest network cable and its benefits. I did not play at all with cables so far. The reason is that I am of the opinion that cables are for fine tuning a system with which one is completely happy. Regarding my cables, initially I have used some Audioquest balanced cables (a middle range model, I have forgotten which one). Now I am using two normal but short internet cables as these sounded better than the Audioquests. Once I've settled for a "final" player, I will certainly experiment with cables. Beside Audioquest Diamond, what else do you recommend?