Upgrading My Vinyl Set Up

The speakers you are planning for should be a huge upgrade. 
 

Since they are from the same company, they presumably have the same sound… but they are likely to be much more resolving and dynamic. So, may sound better with different cables. 

‘In any case you must try them in your system.

I would recommend not trading cables at this point and accelerating your speaker purchase. Which might cause you to rethink some other aspect. I always recommend speakers first, component adjustment, then cables and finally vibration control. The largest impacts first… carefully adjusting the less important aspects to optimize them all.

@dogberry 

The source is in the components. It depends where you are. If you are doing a complete system upgrade then after the speakers you could argue the source… but I would do preamp, amp, then sources. Getting the character of your system… the speakers, preamp and amp are the heart… shared by all inputs. So you would want this perfected and stabilized before swapping inputs… TT / phono stage and DAC / Streamer.

On Nordost. I agree with @macg19 on lower tier not being great. However, my experience is that upper tier are great… not over priced.