I would stick with one - maybe two at most - seat setup for HT/music dubties. A lot here, being critical, depends on your room layout vs setup for proper seating. If it's just one listener, you'll get the maximum sound quality in regard to tonalitity, waterfall (off-axis roll-off), imaging, etc, as the Maggies being dipoles sound much much much better on-axis. Infact, I believe the only way to listen to them properly is sitting anchored between the speakers.
I would still go with a strong solid state amp (likely 5 channel) to drive these, and maybe go with tube 2 channel preamp for all 2 channel dubties. I would probably recommend the latest digital receiver for latest processing, switching, EQ (this is very important), etc, or, better, some latest pre-pro (yeah the latest Emotive Umc-1 will be dirt cheap. Although I'm bitter on how long it's been since they finnaly released it)
Maggies are hard to drive, and a more delicate kind of speaker. I personally would cross em over at 100hz range, and use a good tight, fast, potentially accurate sub. (M&K MX series integrates well,or go with smaller woofer, sealed box designs, or some high quality woofer, and set it up well)
I would not go with a receiver, as they lack current deliver and refinement in the amp sections, ideally. Expect 50% or more better sound from outboard amps, minimum!
I've sold maggies and had em in my systems over the years. While I'm not a fan for HT dubties ideally, they offer tremendous rez and clarity for the money, is the theme with the line. If you value these attributes over brute dynamics, pressence, off-axis listenability, flexibility, and durability, then these might be for you. Again, they are placement and seating sensitive, more than others. So consider lifestyle and taste.
If you do go with this route, and take care in matching the system and setup, you will be rewarded with a great soundstage
Stay with good cables and power conditioning as well for best.