While I can't offer any advice on the Aavik/Persona combo since I've not owned it, what I can tell you is that the synergy between D-280 and I-280 is off the charts -- especially if you use a nice Ansuz BNC cable. I own the U-280 which is basically I-280 and D-280 in a single chassis, and love the sound. By far, the best I've owned.
I think it will be difficult to get meaningful advice since I doubt many people own Aavik, let alone the Aavik/Persona combo. You can reach out to Next Level Hifi as they let you do free auditions (you pay for shipping if you decide not to keep it) in your home. Good luck!