Okay here is my thought (This is Shanna BTW)...
I'd actually prefer to play the House game/Shackled City since I won't be available the next weekend (August 4th/5th) and that way you can finish out First Steps without having to figure out how to add a new player part way through. I know it seemed to be something of a concern.
As long as we are gaming here, I'm fine with keeping it on Saturday's the group just needs to decide if they want to get together morning's or afternoons.
I'd be fine with games running from say 11-3 (3:30) or we could start them later like 1- 5(ish). Basically we are available for play any time during the time block between 11-6. We don't have kids, so really, just let us know what time(s) work best for you and your families.
Additionally, if Friday nights are better, I would be OK with that. But we wouldn't be able to start until later in the evening probably between 6:30-7. Since I won't get off work in Houston till 3:30-4 and I'll be driving home. We would play until 10-11ish.
Just let us know, what works best. We are also okay for alternating since we have a Sunday game in Austin on every other Sunday.