If I’m getting an Orthodox split for the first time would it be worthwhile to learn a different layout at the same time since I’ve heard the learning curve is already pretty rough? I’m thinking of colemak-DH specifically but if there is a better option I’m open to hearing it.
I’d give yourself a few days to become accustomed to the new key positions before learning a new layout.
Focusing on putting your fingers in the right place is tricky enough without also having to concentrate on a completely new layout. Trying to much at once could cause excessive frustration.
That isn’t to say that you can’t use a new layout in the context of a training program for a few exercises a day, but unless you’re in a particular rush don’t change your default layout until your fingers learn the new key positions well enough.