You've pretty much described my little system, except I went the DIY Patekclone route. Purchased the premium LM3875 kit with black gates from Peter Daniel and wired it up in his integrated chassis as an amp only. I've got the RWA modded SB3, the Druids and Modwright linestage. Now previously I was only using a Parasound HCA750 as an amp. To say this is a step up is an understatement. This system has exactly what I have longed for, completely non-fatiguing (hours and hours of listening), crazy transients and sounds fantastic at lower volumes (i live in an apartment).
If your handy with a soldering iron, you can by all the parts from Peter as a complete kit and assemble it in about one evening.