Advice on a Used speaker, Budget $4500

I just sold some of my speakers to thin the heard and try to step up to a better speaker.  I sold Kappa 9s, Dunlavy SCIVs, and Infinity QLS1s.  All of these were very good but I did not use them much.  In my mind I want to get either a Dunlavy IVa or V.  I am looking for a good all around speaker that does it all well, I know some speakers can do certain things better, but lack in other areas.  That is why I want the V's,  it is well known to do it all well.  It is supposed to have a nice balance.  The only thing that worries about the V, is some people say it takes allot of power and I may not have the amp for it.  I sold the IV's due to the lack of bass.  I know my room was part of the bass issue and I am in the process of having a professional help me get my room dialed in.  I listen to all music, but if I had to choose a preference it would be classic rock and blues rock.  I do love crisp vocals and if I had to pick a favorite instrument to listen to it would be the piano.  I know I like classic rock but then list the piano,  go figure.  By the way my room is very big around 500 sqft and has 8ft ceilings.  It is a basement man cave that my wife lets me do what I want with.

Here is some of the equipment I can use to power my speakers.
two Mcshaned Citation IIs
Two Mcintosh MC30s
A sumo nine
a Pass labs X250
Citation I preamp
Juicy Music Blueberry
The Dude pramp
Pass Labs X one

As you can see I have a variety of choices to work with because each speakers likes something different and it is fun to experiment with.
I would love to hear some opinions on what to look at.