Your JC1 is a musical amp. You do not need musical speakers like sonus Faber it will be too warm unless you bipass Olympics and go to the more hi fi and accurate Serafino.
in your budget I would look at about an 18-20k pair of Vivi Audio Kaya 45. They will open up better and have good synergy. They are also easier to drive and you won’t need JC1 just a JC5+ stereo amp.
If you stick with the JC1 Vandersteen Quattro will be also amazing with that amp. They are phase and time aligned and need a lot of power.
For resale another good speaker is the new 45k Wilson Audio Sasha-V but that might me over your budget. The smaller Wilson’s don’t have the bass.