Need your help for pre-amp

I had those amps, yrs ago! Used the old 8045 tubes.

I like a huge soundstage, open and perfectly focus

Of the pres you list, the CAT is an obvious choice for yr amps. The Cello could also work, but you need hi-output for the line-out.
Keep in mind that huge soundstage depends on spkr placement and spkr-amp combo; "Focus" has a lot to do with spkr placement & hi-frequency response...

BTW, hold on to those amps (and check your 1st stage & the grid resistors, from time to time). They're great!

Why not find the Luxman preamp from the same period as the sweet Luxman amps?