Good match with Sonus Faber Grand Pianos

Here is my current set-up:

Sonus Faber Grand Pianos (original version)
Linn Lk-140 amp
Linn K-400 bi-wire speaker cable
Linn Cinema Classik Source
Not set on ICs yet – think of Blue Haven or Red Dawn, but open to suggestions

I’m not sure if I need more power for these speakers. I plan to eventually sell the Cinema Classik although it is doing good double duty as a CD and DVD source. I’ve considered going tubes but my understanding is that I would have to get a pretty high powered tube amp so I might just go tube pre and keep with a SS amp. I eventually want to go to a Supratek Chennin but am holding off until I work up a good turntable project.

I need advice on the amp side or integrated amp side. Would I be better off adding an addition Lk-140 and biamping and then purchasing the pre-amp later along with a turntable? My other option would be to pick up a Simaudio I5 and a new digital source. This would require some more work on the phono side as the I5 doesn’t have a phono pre – also not sure if the total cost would be worth it. I would also have to change my speaker cables around but this wouldn’t be too tough.

I listen to jazz, reggae, rock, funk, blue grass, etc.

Your suggestions are appreciated.

Kindest regards,
Erik