Teres Owners - Please help

I am strongly considering a Teres TT and am torn between the 265 and 320 rosewood models (really like the 255, but spouse insists must be all wood). Rosewood was chosen strictly on price vs. Cocoboblo. There are two (2) issues I would welcome comments on.

Issue #1:
After doing research on Agon and AA, the Teres mass loaded design seems to really need a very heavy and stable rack/stand. I have a Salamander Synergy S40 (http://www.salamanderdesigns.com/syn/synergy.jsp?modelbase=su40) rack with a door on the front to “hide” the other equipment. The Teres will be placed on the TOP of the rack. This rack is fairly stable, but not as much as others. Since the mounting surface is not “super” stable, does it make sense to even consider the 320?

Issue #2:
My Preamp is Mac C2200 (40 dB gain), and I plan on keeping it for many years. With only 40dB gain, I am limited to MM or high output MC and am leaning towards a Sumiko Blackbird or Benz at the moment. My budget would allow for the 265 with the Morch 6 arm (possibly the Schoder 2 if stretched) or the 320 with Expressimo modded Rega arm. Keeping in mind that I can only use MM or high output MC carts, is the table or the arm more critical in this situation? Since most people with Teres tables on the discussion forums seem to use < 1.0 mV output cartridges, I was not sure how a higher output cartridge is more tolerant of a “lesser” table/arm combo?

Thanks in advance for your help!