Your weak point is the Benchmark DAC. A few options for you to consider:
- Sell the DAC and purchase a new Aurender A200 DAC/streamer. Their Conductor app is second only to Roon, and you are done!
- If you keep the Benchmark, the best streamer-only in your price range is the Aurender N200 ($6K retail)
- The best value of streamer for the Benchmark, should you choose to keep it, is the new Lumin U2 mini.
I think the Aurender N200 is overkill for the Benchmark, and monies can be spent elsewhere.