End of "Legacy Gold" and the easiest way to change?

The point is that our benefits associated with purchasing the "Legacy Gold" product expire next month, and we're currently offered the following offers in the Partner Center. Is it possible to purchase both packages "Partner Success Expanded Benefits" and "Partner Success Core Benefits" at the same time, thus obtaining a combined total of 50 Microsoft 365 Business Premium licenses? To maintain business continuity, we need approximately 60 Microsoft 365 licenses. We currently have E3, but we're forced to downgrade to Business Premium. This would be a significant one-time cost if we had to purchase these licenses separately, so we'd like to take advantage of the two bundles of offers prepared for us. Is it possible?

This will reduce cost demand by x2... I really hope this is possible.

If not - what's other options? We need at lease 55 licences for Microsoft 365 but Expanded Package give only 35.