Definitely a great move and idea.
One thing people frequently overlook when buying higher end CAT x copper cable is the thicker the cable the more difficult (some cases impossible) to attach an RJ45 head/plug or Keystone type connector. Additionally, it can become much more difficult to flex/bend, especially if considering it in an electrical gang box for a face plate. This is why frequently you’ll see “cat 8” bulk cable for not much more than cat 6E bulk cable.