Global Services: $ Spend or Fare Class More Imporant?

I am working to reattain GS status this year (been several years since I had it).

135K YTD PQMs as of 8/1.

Booking lots of trips for rest of year.

What will get me closer to GS? Say a full fare economy Y or a discounted business class Z or even discounted first class A? Is it purely dollars driven or is fare class relevant?

Less importantly, does "Premier Accelerator" with PQMs play any role at all?

How do I get GS?

Thanks!

Matt in San Francisco