If the Friday/Saturday switch works for everyone, let's do it. Saturdays are generally easier to plan for me, at least they are if we plan in advance, but I can do the same with Fridays...
But the one to make that final decision has to be the one that is most affected... the DM.
Preparation is difficult enough without losing that time Saturday morning to put the final touches together.
Jaren will Friday work for you this month?