At this level I'd think either set would be a good choice... given the speaker cables are already AA, I'd probably stick with them. naturally, if a window to try is available, why not do so? I know Rob at AA allows such a thing... I don't know about Signals stance on the issue however.
Mixing cables can and will allow some finer tweaking of the sound, however which ones to mix is always a mystery and requires a goodly bit of investigation... trial and error so to speak. Built in synergy usually comes more readily from 'Same - same' throughout.
Later on, if same same is the take here, you can then more easily slip in and out one ic at a time to try gaining some ground towards refining your system.
Good luck.
Mixing cables can and will allow some finer tweaking of the sound, however which ones to mix is always a mystery and requires a goodly bit of investigation... trial and error so to speak. Built in synergy usually comes more readily from 'Same - same' throughout.
Later on, if same same is the take here, you can then more easily slip in and out one ic at a time to try gaining some ground towards refining your system.
Good luck.