Hi toulblocks,
Elevate is the mastering limiter, and should be last in the chain. You're correct that it can do most of what the others can do. However, if you need additional EQ, or for instance Match EQ, you can use EQuivocate. Also, some people like to clip the transients before the limiter, in which case you can use Saturate before Elevate.
If you're looking for a longer tutorial on one persons approach you can watch this video: https://www.youtube.com/watch?v=OKvG6aqiYeI
Dan
