suggestions please

No offence to Paradigm, but they'll sound defective next to a pair of Vandersteen Model 2's. If you can't go $2000 new, you should be able to get a very good used pair. You can even go with a Sig 1. Your current amp will work OK. Eventually, you may want to get something a little more powerful. Your room size is fine. I've had the 1's and 2's in a room the exact same size. The ceiling was 10' but not vaulted.

I'd talk to Fritz at FRitzspeakers. His Carbon 7s are excellent, but are slightly high for you, but I'm betting he'd have something. I think that would be my first choice new, though you'd have to ask fritz about room size.

Many choices used, of course. I'd also think seriously of a kit, which needn't be too difficult (fun in fact) and can be excellent bang for buck.. Selah and Northcreek are both places that would work with you on that, as would Madisound.

John

Your Nova is about 60 wpc.@8 Ohms(80 wpc.@ 6 ohms)& has a voice that leans VERY slightly toward warmth in factory form.
How loud do you listen most of the time,what type of music do you generally listen to,what type of sound do you like(warm/organic,cool/highly detailed etc..)& is your room hard(wood floors-lots of glass etc..)soft(carpeted-big soft furniture etc..)or something in between?All of these factors will determine what will sound best with the Nova.
Paradigms are generally easy to drive but can sound VERY bright in hard rooms,just as Vandersteens are voiced warm so in soft rooms usually sound veiled & fat.