Hi
@Moreni! Welcome to ASR.
60cm is right at the limit of what Genelec deems sufficient distance for the 8330's drivers to sum well.
Personally, I'd really rather have a Coax design at that distance.
Have you considered not Genelec? Something like the Orbit 11 or Kali SM-5.
That would relieve any concerns about listening distance and still leave money left over for a Sub. Best of both worlds.
For the Sub, you could consider the Neumann KH750 or iLoud Sub, both of which could effectively replace GLM.