Still, my impression of a Terminator II and Terminator Plus is that these would give me a much more refined and life-like sound compared to the built-in DAC in my NODE streamer or most of the wireless speakers you have mentioned.
The speakers I mentioned don't have to be ran wireless you can connect them with ethernet cables. I agree with your FutureFi minimalism which is why I pointed out the speakers you were looking at you don't need a DAC, more to the point using an external DAC would not change the sound as all of the inputs go through the built in DAC of these types of speakers. The analog input simply goes through an ADC first so while it is possible to use your own DAC it doesn't do anything except add another conversion and increase cost.
I think you're on the right track with your philosophy but do a bit more research on the speakers you're considering. The Genelec 8351b is an excellent speaker and in a small room I doubt a subwoofer would be needed for most music.