Which Optifine Version To Use For Wynncraft Mc 1.8.9?

I am not sure which Optifine HD Ultra to use 1.9 or 1.8.9? There is also Optifine HD Ultra 1.9.2 as well that I'm not sure will run smoothly if I choose MC 1.8.9.

I just want to be sure that when I choose MC 1.8.9. in profiles, the Optifine version I will install, is going to be compatible. I choose to play Wynncraft on MC 1.8.9. because texture packs and some entities don't load properly for me in MC 1.9

I also have a related question about downloading 5zig program. An old YT vid showed installing both Optifine and 5zig at the same time. What are the benefits of the 5zig mod? Is there a more up to date vid to show installation guide?

Appreciate any of your advice/experience tips!

 

@Moe_Ronickah …. do u know anyone savvy in this area? I've seen Syaoran3 post a modpack.

 

http://optifine.net/downloads
Select OptiFine 1.8.9 HD U H5 from the list.