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

Our interpretation?  
Who is this we?

If the amp offloads the heavy lowest octaves bass work to the sub as it sounds like it is designed to do you should be in good shape.
Offloading bass to a sub opens up many new possibilities with lower power tube amps for reasons discussed above. . It takes way fewer watts to achieve a higher Spl when the low bass frequencies are excluded. Heck any good quality table radio with limited bass extension is a good example. Plenty loud in most cases.

I’ve seen and heard some model Raven amps at shows but in lieu of having really heard one enough to assess, having the built in crossover feature for offloading work to a separate powered sub alone is a very practical feature for a tube integrated amp in general so Raven gets some points for that feature alone.

@b_limo 
Best of luck with your new amp. Many members had good intentions regarding advise for you. 

That crossover function sounds interesting, I'm going to look it up.