Reminder:
https://genshin.honeyhunterworld.com...inobu/?lang=EN
Kuki is a realy bad character, so save your primogems. She is just a electro Barbara with hu tao skill.
Chungyun is mosty usless character and very pain to play with his E. Not to mention he has a bad support.
Gorou is usless for 95% of characters, so pull only if you build a geo only team.
Itto is kinda ok, but needs a very high investment in special supports or he suffers from lack of energy. You can just use Noelle instead as she hits a bit less, but she provides shield and healing.
Personaly i think this is a banner best skipped (you can get new 4 star on some other banner later).
As for weapon banner:
Redhorn Stonethresher is only realy good for 2 characters in game, however the big trap of this weapon banner is Memory of Dust as there are just better 4 star weapons than this.
For 4 stars --- stingless is realy good, Lions roar is mostly usless, Sacrificial Fragments is Bis for Sucrose, Dragon's Bane is ok, but replaceable by a better fishing weapon and Lithic Blade is usless garbage.
I would only recomend pulling on weapon banner if you are planing to build Fischl, Venti, Sucrose or Xiangling.