Going for Tung Sol 12AX7's in the pre-amp, and JJEL34's or EL84's in the output. Changing the speakers to either Eminence Swamp Thang or Celestion V30's. I want a sound that can go from super clean This Will Destroy You/Russian Circles type sounds, to a mid gain crunch like Coheed & Cambria, and then pushed right up to I Killed The Prom Queen high gain. Would these be good choices for those sorts of sounds?