Built an enderman farm in main world close to my base. Need advice

So I built an Enderman farm in the regular world, close to my base at the top of a mountain. The very top of the structure where the Endermen should spawn is

Tutorials/Enderman farming – Minecraft Wiki

Enderman XP farm I made! Got the design by iJevin, but I wanted to add flair and match the End + enderman aesthetic. Still have some detailing to do (and likely some

Minecraft Enderman XP Farm 1.20.2 - BEST DESIGN

Tutorials/Enderman farming – Minecraft Wiki

The farther you go from land the fewer Enderman can spawn. I don't know how to get better rates, and be away from large spawnable areas. How far out should I build

Enderman spawning in portal base gold farm : r/technicalminecraft

Rate my Enderman farm ;-) : r/CreateMod

How to Make An Enderman Farm in Minecraft (2022)

How to make an enderman farm in Minecraft 1.19

Tutorials/Shelters – Minecraft Wiki

Tutorials/Defense – Minecraft Wiki