A change in amplifier will help, Edorr. As we've been saying, the Eidolons are *very* revealing of everything in the audio chain.
The Eidolons will "float" an image in width, height and depth. But expect the image to be rock solid, with no wandering, wavering or shimmy. If the image is not absolutely solid and tangible, room placement is definitely the next area of experimentation. The Eidolons will enjoy a lot of clear open space behind them. So be sure to experiment with pulling them well out into the room.
Judicious room treatment for fine tuning can also help, but this is not something to do early on in the process.
Good luck with your subwoofer matching experiments. Good move to set the crossover at 30hz. I don't know how the JL113s interface to a system, but as you work forward be mindful that the Eidolons will make the sonic signature of any crossover network audible.
Best of luck to you in optimizing things. Enjoy!