I've since revised my feeds down by about half with good results - the cuts are cleaner and not as demanding on my cooling system - but other than that what I wrote is still OK.
Team 223 has has a lot of luck with their CAMaster Stinger (not sure if it is a Stinger 2 or a Stinger 3) using Onsrud aluminum bits and feeds around 20 IPM. Ping CD User "rcoren22" (who is off for the summer) for
his take on the machine.
2' x 3' might seem plenty big, but wait until it isn't. Just a hair larger (like 48 x 28) has a lot of additional uses.