I am also a PS Audio BHK preamp owner, and may have been the one who alerted another member of the current bargain. I really think it is a strong piece that elevated my system, is responsive to tube rolling, and actually drives my Audeze LCD-2 headphones very well, which is not always the case. You can't lose getting that preamp and building around it.
But I am a source-first kind of guy, so spending your resources on a turntable and a phono section might be even more rewarding. For example, the maker of my tonearm, Pete Riggle, swears that the Merrill Gem Dandy Signature Polytable is one of the best turntables he has ever heard, and he has been doing this a long time. And it is around $3000, which in this market is reasonable for what could be a "final" turntable.
And a good phono section, like that of PS Audio - the Stellar that Michael Fremer enthusiastically blessed, might also matter more. A nice alternative might be the new Zesto Andros Spirit.
The other way of looking at it is that the Merrill and the phono stages I mentioned are at full price, and will likely stay around those prices for the foreseeable future. Right now you could have the the BHK Preamp at half price, and that might not happen again for a new pre-amp of that quality for awhile.
Decisions, decisions...