I am a big advocate of high quality streamers. I have used many approaches and a number of dedicated streamers and highly recommend Aurender… I now own two… see my UserID.
I recommend looking at two components for upgrade… the Freya+ as well as the streamer. I would upgrade the streamer first… but perhaps stretch you budget a bit to $3.5K - $5K to better match your othe components. You may not get the full value of your system until you do your preamp as well.
Also, don’t worry about connectivity. Just get a wall wart extender for your streamer… plug it next to your audio system and plug your streamer in to it. I had a Aurlic Aries G2 for about a year which I struggled with… I had bought it because it had internal wIFI. Then I bought my first Aurender and a wall wart extender and sound quality and all my problems went a way. I know of a number of $150K systems operating this way.