complex flash questions

got me self a pair of photoflex monolights, with my current two 58am and a 20am, i wanted to set it up as following

monolights in sync via pixel king, 1 transmitter , 2 x reciever, 20am on top to control the two 58am

seems like a77 only recongise the pixel king and although 20am goes off, nth happens with the 58am no matter which mode i set them to.

any one else tried this type of set up before?