Wilson Sasha 1

Thanks brauser.   I may start off trying to do this with the sophia 2s first and then move up to the sasha's later.

Rshad000,
did you ever get the Sasha's? I went from Wilson Audio Watt Puppy 7's to the Sasha's, love them. I almost got Magico's but the Sasha's sounded better and fuller at lower volumes, both sound great loud. I have a T+A integrated amp and use the Chord Dave as my DAC, High Fidelity Reveal magnetic cables, Niagra power, Clearaudio turntable and a Manley Chinook tube phono amp & an Aurender music server. All sounds great with the Sasha's. 

I 2nd adding your subs. The crossover that JL makes will work well. I would even try them at 60hz. Your speakers are starting to dive there. I added 2 JL E112 subs a few years ago and it stopped my upgrading. I will probably never have a system without subs again. 

I forgot the add the Sasha 1 is one of my favorite all time speakers and I think spending more is silly unless you have a very large room to fill. 

Maybe bor the best or the most accurate but I enjoyed them the most. 

I have the Sasha 2s and love them. I have never heard the Sasha1s but I am sure they are close. IMO it is very difficult but not impossible to add a sub and still have a well integrated sound and might end diluting the factories intended excitement and realism. The improvement in the tweeter, mids and upper bass over the Sophia will not be had by adding a sub. If you are hooked on the Wilson sound as I am, moving up the ladder might be your best bet.