There are a lot of good inputs in this threads, I agree with them: going for the 7800X3D will be a good investment and it will last you longer.
I would look into maybe saving money on the case, I think Corsair may have cheaper ones (and actually easier to access).
For memory, 64GB is hardly required unless you know you need it (heck, I have 196gb).
This current version of Ryzen is also hard to get with faster memory if you do more than 2 sticks, I know someone mentioned adding more memory later, but it may not be possible if you would like to keep the speed.
Monitor wise, 144, 165hz won’t really make a difference. You must decide on the resolution, capabilities (HDR) and etc. I went with 3x Innocn 32M2V, they have some issues but are perfect for what I need. Unfortunately, to drive the monitors, you need a fairly good graphics card to play at 4k with everything turned up. At 2560x1440 I think your graphics card is the right one (I just think 32" 1440p is too much, but that’s my personal opinion).
Good luck!
I think there’s not much of a difference, dying doesn’t inflict anything besides wasting a little time. If you use the combination of skyscale and other mounts, like the gryphon, you can quickly cross the map in a few seconds.
Allowing the player to waste a little less time could be seen as a quality of life improvement, which will push other people to also unlock the skyscale (I hate that lengthy quest line and the time gates).