change deployment types and number to support an estimated target of 2.5m ADU

Methodology was to take this post: https://groups.google.com/forum/?fromgroups=#!searchin/mozilla.dev.identity/ADU$20load/mozilla.dev.identity/st_eL7kUpUw/hrOUUatl5i0J

I.E. at 3M ADU we run 4.41 load on 2.3Ghz 24 core procs - suggesting we need about 14 processors with 2.5 compute units each to hit 3m in amazon.

thoughts?