Raven Blackhawk LE... am I going to be disappointed?

Not just saying that because I am in the process of buying a Raven Reflection MkIII either. ;)

I'm getting one as well. The Reflection MK3 should be ready sometime next month. The chassis were delayed because of shipping problems.  I think it will be a phenomenal amp.

Low impedance or low sensitivity?  Which matters more?
https://forum.audiogon.com/discussions/high-sensitivity-low-impedance-vs-low-sensitivity-high-impedance

“Solid-state pseudo watts” 

This place is hilarious 😂 

Several different 50-60 watt tube amps run with different speakers produced bass at least as good as 150-200 watt solid state amps.

Sorry but BS alert.

A watt is a watt unless the specs are juiced differently.

Soft clipping makes X # watts seem to go further because peaks get clipped in a listenable manner. But 50-60 watts is equivalent to only 50-60 watts period no matter how produced. It may sound fine subjectively but it is NOT, repeat NOT, the same as 150-200 in terms of dynamic peaks possible without distortion.

If you have a good combo of amp/speakers,  more power may be overkill at some point unless you have need for even louder potentially ear damaging dynamic peaks, but that is a different story.....just two different ways to effectively slay the beast.

A couple additional thoughts-

1) A High Pass crossover is a very simple device and should not degrade sound quality one bit.  Think about an RIAA equalizer in your phono preamp and the serious amount of EQ it does to the signal.  

2) There are other high quality higher efficiency speaker options.  The Legacy Calibre is an awesome speaker for example.  
A pair of Spendor D7.2s would sing loudly and clearly with the Raven amp.  

3) Tube amps a lot of times will not clip until very loud volumes but usually just run out of gas without making a ruckus.  The midbass and up will continue to increase in volume while the bass will plateau.  

4) I think the OP will be more than happy.