I don't shoot ELR, so this is worth what you paid, but:
Zero elevation wherever you want, but your environmentals better be dead on. Unfortunately, wind does influence elevation, so you're inviting errors at longer zero distances.
Zero windage at a distance where wind won't influence your trajectory more than half your windage click increment. Honestly, I'd also recommend doing this for elevation, but you can put that zero on your elevation turret wherever you want.