On a $4000 budget - it would be nice to see an alternative to tower speakers - some people will
not desire, or would be restricted (placement and/or WAF) to bookshelf speakers and a sub. >>
Also some may not desire towers with built-in subwoofers.
Also on that type of budget, some people may find it difficult to spend/justify $1200 on a Amp.
Something like the Outlaw receiver with built-in bass management, would be a good option.
RR2150 Stereo Receiver