Honestly I would keep your front end and go with some more efficient speakers. For years I dealt with power hungry speakers, Infinity IRS Betas, Gammas. Now I have 2 pairs of speakers I rotate into my system. Tekton Moab’s and Jbl 4435’s and couldn’t be happier. The Primaluna gear is great. I had the same setup and regretfully sold it. One huge improvement when I had mine was to use Brimar tubes for the gain tubes and I had Kt-150’s.
Upgrading from Primaluna
Recently went down the front end upgrade path and am running a nice table and phono now. I'm curious as to what the weaker link in my system is between my Primaluna Dialogue Premium Preamp and my Dialogue Premium Hp Power Amp. I'm considering swapping out the amp to a Ps Audio BHK250 for the summer to avoid heat, but am curious if I would be better off dealing with the heat and moving up to say an Allnic L-7000/Arc Ref 3 for the Pre. I'm happy with tubes on the front end, but curious if I'm running out of gas with 88DB efficient speakers and a single chassis tube amp. Which amp would you upgrade first and what benefits would you expect?