Do
not buy patch cables from china to cut and wire it up to keystone jacks. More than likely you'll find you will not be able to do this!
Ethernet cable for infrastructure use is solid-core cabling. You will need this to terminate properly in the keystone jacks and rj45 ends. This is also why it's more expensive, since it's a good solid core high-quality copper. They are pretty stiff, a little heavier and more difficult to manipulate (hence the backache comment, cos standing on top of the ladder and holding cables overhead for hours is backbreaking work
). These are more expensive due to the build quality, but are more assured to last. You should be looking at brands like Belden.
Patch cables you buy from shops are usually multiple-strand cores. Especially cheap ones, since they don't need to run pure copper or all quality metal - it's usually alloyed to "just good enough". It's also stranded so it's much more flexible and portable. They are cheap and meant to be easily thrown and replaced. It's good enough to connect from the patch panel to devices, but you should not be running these inside trunking for more permanent installations.
As mentioned, Cat 7 and 8 aren't official standards. They are actually shielded cables so if you want to run them together with power cables in the same trunking and don't mind the expense, consider running shielded Cat 6A for the best returns... For me, I ran unshielded twisted Cat 6 in a separate trunking beside the power lines.
I'm sure there is some interference, but so far it's not been terrible.
There's an exception if you want to use pre-crimped cables from online - don't cut them, so it's jack-to-jack from end to end. It might work for a few years even, but I will not guarantee longevity. I'm heard of people who have done just this, using flat cables in the same trunking as their power lines (oh my, the interference!) Bear in mind that attenuation is higher for stranded cables so I won't even think of it for distances greater than 6m.
Good luck to whoever wants to run cables at home.
