I’ve owned 3 tube amps paired with bookshelf speakers and by far the sweetest sounding was a Raven Audio Osprey. $5K
I could not find your speakers specs (their website is unusable on my phone) so I can only assume 35wpc is enough - it was for my Harbeth 30.2XDs
It does have sub outs with a crossover filter that can be bypassed, has a remote, and has a 45 day in home trial policy.
$5K is a bit over budget but they sell direct so no dealer margins to account for, so more bang for the buck. James Connell is great to work with.
Ive since moved on to solid state and I sold it quickly and the new owner also loved it.