I used this kind for my case mod. I kind of preferred it to be non-adhesive but that other stuff looks pretty good too. Either way, if you're going to make some cuts, Braegnok's idea is a good one and hides any uneven / jagged cuts.
These are both non-adhesive. It forms a tight enough grip that it doesn't move and if I ever need to take it off for some reason it's really easy. Figure if it starts to look bad from dust or something.
Finding enough time recently to start going down the tedious path of sleeving my cables. At this point I've only done some testing and then finished a Molex cable and PCIe 6-pin extension cable. Using 425 Paracord, working well so far and very happy with the results. I will go into more detail about what I'm trying to do and what I've picked up in the process.
While you two hashing out this puzzle is intellectually stimulating and actually teaching me something, it's kind of irrelevant as I don't want to decrease my res to 720 but was maybe hoping to increase it. So 1440 would be ill advised? Again, doesn't really matter as I don't have that option via HDMI for some reason but was curious.
1440 would not typically look good on a 4k TV if using it as a computer monitor. That's your answer for your current setup - Stick with 1080 until you get a new card.
You're not going to be lacking any performance for gaming right now. Like Weeny said, an i7 instead of an i5 would be a nice upgrade but starting fresh will cost much more than any real benefit you'll get from Ryzen (if just gaming). With your setup I'm not really sure what is driving you to think you need to upgrade. A 980ti even by itself is still more powerful than even a 1070 and that's still a good enough card even for 1440p gaming. If you have a 1080p monitor then I really don't understand since you'll probably be fine with your current setup for a few more years.
You won't get much benefit from gaming if that's your main focus. In fact some games might be worse since Ryzen doesn't seem to overclock as high and it's not much better than haswell clock-for-clock. If you can benefit from the extra threads or other features then sure go for it. If it's just for gaming, not worth it IMO.
You can also just buy extensions for your PCIe and Motherboard cables if you just want to accent them. Ensourced or Mainframecustom come to mind as some of the higher-quality providers of custom sleeved extensions.