Congrats to you from another Anti-Mulleteer. I see that, apart from sources, your system and mine are the same - 552DR / 250DR / ProAc Tablette 10 Signatures. Regarding the latter, your other thread was instrumental in my buying a pair of Tablette 10 Signatures sight unseen, so belated thanks for that.
I see we have some professional commonality as well (I was an architect in a previous life).