Welcome to the forum and Naim family. I considered both the Star and Nova recently when upgrading from a UnitiCute2/NAP100/Totem Hawks. The “old” system is now enjoying life as my second system in the media room and I have a Nova with Totem Forest Signatures in the lounge, with a Core as an audio server. It’s pretty close to a much more expensive component system.
The Star will rip CDs with files stored on an attached usb drive and has 70W output. The Nova is a significant step up again in SQ and 80W output, but drops the CD ripper. Either would drive the Sky Towers, though I think the Hawks or Forests are a better sounding speaker and I suggest you try both as a comparison if you can. I did run my Hawks on the Nova for a while and they were very good, but the Forests are another level all together.
Ultimately, budget comes to play. Personally, I’d suggest the Nova with Totem Hawks or Forests to match your budget unless you need the CD ripper. The other consideration is whether you want to upgrade later on, in which case, size speakers accordingly.
Have fun.