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.