Cary Rocket 88R F1 with the KEF LS 50 speakers.

Hi, I was wondering if anyone has any thoughts on this combination?
My PreAmp is a Cary SLP 98L (Gain 20db)
I have a small listen room with great acoustics 16w x 12d x 8h
I was wondering if the (30W Class A Triode mode) or the (60w A/B Ultra Linear Pentode Mode) will be enough power for a speaker rated 85 DB sensitivity?
Triode is probably my preferred mode but I am worried it will not be enough for the KEF's ?

I listen to mostly Classical and Jazz but the Black keys and Talking Heads get loud sometimes as well.

On another note,
Can anyone suggest a site (maybe this one) or a forum that will educate me on the different tube choices and different tube characteristics for the SLP-98 and Rocket 88R F1?

thank you in advance for any help.