Dev,
Ok, here's a suggestion, when you get in touch with your FMA dealer..
Amplifier - Ask to audition the FM115 mono config. (250W 8ohms, 450W 4ohms). They list around CHF85,000. If this is insufficient to drive your speakers/room then you will need the FM1811. Sound wise they are both fairly similar in characteristic and quality, and a refinement over the older Resolution series.
Pre-Amp - Partner them with either an FM255mkII, FM266mkII or the FM268 (depending on how far you want to stretch your budget). For pre-amps, unlike their amplifiers, I heard more significant improvements each time you climb up the ladder.
(I came to above conclusion as I'm doing this upgrade in stages (cost consideration), I was thinking to either buy the amp or pre first. I tested two combinations, one 1811/REF3 and the other being 611/268. I had much better result with the latter, therefore decided on the FM268 first and do the amp upgrade later).
Cables - Tie them all up with FM's cabling (a must!). Forceline3 spkr cable and PIT (Precision Interface Technology) ic's. This is where it gets a bit sweet, though not as expensive, they put to rest my Valhallas, Synergistic Designer's Reference2 and Siltech G6 ic's and speaker cables. You will save a bit here as you don't need tenths of thousands of dollar in cabling to make your system work!
I have now actually heard the above FMs amp/pre-amp combinations in 5 different speakers set-ups ranging from tiny MiniII to the giants - Wilson Wamm, Kharma Grand exquisite, Acapella Campanile and FM's own Inspiration System - where all sounded truly amazing! However as none featuring your MBLs, I did hesitate initially. Goodluck! But given the odds, with the superb combinations above I'm sure you will not need one.