Best amp for $2000-3000

I have finally saved enough money for a new system. I think I'm 99% decided on the Magnepan 3.6's as speakers. I am looking for recommendations on the following:

Amp - $2000-3000. I like the Odyssey Extreme Mono's or the Innersound ESL.....but I'm open to suggestions.

Preamp - I currently have an old Perreaux SM2 Preamp -- is this good enough?

CD - I currently have a Sony CDP-990 with an optical out. Should I just add a
DAC to this?

DAC - Looking at the Benchmark DAC-1 or a used Muse 2

Sub - narrowed it down to REL, Sunfire or Velodyne.

Speakers - Maggie 3.6's -- unless someone can twist my arm to listen to something else.

Any thoughts are welcome!!

Thanks,

Mike