but still it a very good question
it depends on the amount of money you are willing to spend as a "burst"
If you are already very happy with the sound, and i drool over your setup

i would only buy the isabella sans dac. This will considerably make you more happy as this is the
way good tubes will love you.
Then later you have the choice to add Vinnie's dac to it, as i can predict feeling Vinnie's "gestalt"
that this dac will come and it will be better than the olive.
You can also sell the server and get instant nirvana
but building up pleasure adds the joy of the road to the city
contradicting technically this, I am afraid, is the build in dac does not need interconnects and the inevitable loss IC's will give compared to direct links. Vinnie must be able to make the integrated dac sound better than the same dac as a stand alone.