I also dont think Byram is going to play game 1 of this stretch in California either. Gotta remember he hasn't actually had a single practice with the Avs yet, and will only just be getting on the ice today for the first time in 10 days, and its only going to be he and EJ on the ice.
They're definitely going to want to get him into a practice or two at minimum before throwing him into the lineup.
My guess for when he starts is next Friday against the Ducks. That'll be the 2nd night of a b2b, a weaker opponent(Even weaker then LA IMO), and will be a good targeted rest day for Cole to come out of the lineup. That will give Byram at least 1 full practice with the team and likely another couple on ice session as part of the taxi squad.