Thanks !With 97dB sensitivity you are good but is impedance plot of your speakers available to check ?
Dared amps have very lean OPTs, not much in the low end I suspect.
Your speakers will mate very well with a nice tube amp.
Put a nice preamp in the chain. Your best and most vfm bet is the JC2 clone, all discrete, through hole components and no opamps. Make sure it has original JFETs.
Try it and your setup will get transformed and you may have second thoughts on adding a sub.
I quite like how it sounds with the Croft. (Except for that last bit of bass heft)
Maybe in the future a Decware Zen triode may float into my orbit. It is mentioned by a few users as a very nice match for these. At the moment I am not considering adding a preamp.