I would agree, that a Integrated Amp would be a better/more affordable choice to start off with.
I believe Danny's speakers are efficient enough to use with tube equipment. Hi efficient speakers are a must in this game.
Once I put tubes into my system I was hooked, way less listing fatigue, and more holographic presentation.
35 watts are plenty for most Hi efficient speakers (90+).
For an Integrated amp a budget of $1,500 to $3,000 would be about right (IMO).
Maybe a used one would from a reputable member of a audio club such as this one, or a new one direct from a small company such as Aric Audio, Decware(long wait will need to buy used), Erhard Audio, Bottle Head, just to name a few.
The Integrated will save you money on a second Power Cable and a set of RCA's, a savings of $200-$1000.
A nice streaming DAC (Lumin) , or Turntable (Denon DP-59) with an Integrated, Danny's speakers and some quality speaker, and RCA cables and you'll be a happy audiophile.
Burt..