That W1 limiter is pretty awesome if you don't have the waves one.
SonEQ is a super cool pultec-ish EQ.
Klanghelm has some free compressors.
Read this and then download ReaComp:
http://reaperblog.net/2013/01/reacomp-is-a-compressor-engine/
It can mimick super expensive compressors if you know how to set things just the right way.