op’s speakers
http://www.coincidentspeaker.com/dynamite-loudspeaker.html
The Preamp has very desirable features. I might consider it great value, inexpensive, but not cheap.
the tube amp appears well built, evidently maker has good reputation
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I’ll presume the speakers perform well in the space.
I would go for more power, to deal with instantaneous needs.
this is why using stereo amps that can be bridged as mono can be a good choice. Of course from a brand likely to be readily available.
Turntable: I do not like ANY of these turntables with tonearms that lack removable headshells. However, who knows, for some a single darn good cartridge, especially factory aligned might be best.