Put the mpc or whatever encoder to EAC folder, and create various profiles- each one dedicated to a different encoder. Set the commandline parameters for every one of them at your likings, and you are ready to go- I think it couldn't be simpler... in fact my EAC is set to use 14 (!!!) different encoders.
Would it hurt very much to read the EAC documentation and the SATCP tuturials? Methinks not...
mpc uses ogg vorbis tags, and EAC DOES tag .mpc proerly- use the parameters at hydrogen audio. Or you can use afterwards the best tagging utility on earth- the commandline "tag", or its best Win32 GUI- Tagger. Links also at Hydrogen Audio.