I think you better stick with headphones in that dump.
I think you would have to really like the sound of the Q1 monitors to spend $25,000 on them.
I listened to the Q1 at RMAF and though they did not sound bad I was not wowed by the sound. For 25k I would personally buy a full range speaker or monitors and two good subs.
I have not heard the new 805d but used to own 805n. I have heard the 801d and the diamond tweeter was preferrable to the old aluminum dome.
If you like the B&W sound then it makes more sense to me. Have you listened to the 805d?
If your loaded and want a second system but only have a small room for it maybe Q1 would scratch that itch.
I like the looks of the Mini much more. Though I would take sound over looks any day. I would think you could get both at that price.
If your crossover parts cost $5,000 alone it must sound awesome. I would like to know what combination of crossover parts for a two way design would add up to 5k? Don't get me wrong I think good parts are important but the implementation is probably more important.