speakers for Primaluna Prologue Premium Int Amp?

i got this amp with KT88 tubes. i'm thinkin' of upgrading my VON SCHWEIKERT VR-1 monitors & REL Q150E sub to DYNAUDIO FOCUS 140. i want recommendations for other speakers to match my amp. i want bookshelf speakers because of space constraints. thanks in advance.
Reference 3A de Capos

These babies sing with my Prologue II, the bass is great for a stand mount speaker. Nice range i listen to classical ( not perfect for large works but Organ music sounds pretty good) rock, folk, blues.