My first full-on system over 20 years ago:
Celestion SL6si ($600)
Velodyne F1200 Sub ($600)
Denon Integrated ($250)
NAD 5000 CD player ($350)
Audioquest Crystal Cable/Emerald Interconnects ($600)
With the extra budget, I would probably switch for a nicer NAD integrated, switch the Celestion for an old Apogee Stage and maybe tweak the speaker cables for a pair of TA Ref second hand.
Celestion SL6si ($600)
Velodyne F1200 Sub ($600)
Denon Integrated ($250)
NAD 5000 CD player ($350)
Audioquest Crystal Cable/Emerald Interconnects ($600)
With the extra budget, I would probably switch for a nicer NAD integrated, switch the Celestion for an old Apogee Stage and maybe tweak the speaker cables for a pair of TA Ref second hand.