I posted my comic on Mondays/Fridays at 3:30pm. Mondays because people are likely to get distracted on the internet because the weekend is over, and Fridays because people are done with work and the weekend is coming up and so they can take some time to binge on their comics :v
I chose 3:30pm because that's a time that I'm usually able to read comments/do promotion stuff/have posting anxiety and not get into too much trouble.
One benefit of a 2 page a week schedule is that you can sort-of simulate page-turns, which in print are great because you can use them as scene transitions and you can hide surprises. I would treat the longer gap between updates as that page turn as a way to help build suspense, doesn't do anything now that the comic is done but whatever, that's why I'm putting out a PDF and a Zine.