The Apocalypse Challenge - Attempt to adaptation

Hey so I just started play testing this (hope you don't mind!) And I have a question about a few things. 1. The grill has to be outside, so is this included in our 6x6 space or is it like the mailbox and trash can? I assumed its part of the 6x6, but it would be nice to get some clarification. 2. The house has to be on a foundation, which mean you need stairs to get up. Are the stairs included in the 6x6 space? On this one I assumed they weren't because it wan be a pretty big chunk of empty space that we would have to account for. Stairs for upper levels of course would have to be in the 6x6 still.
3. How are we supposed to have our Sims gain fitness skill? In ts2 we were allowed the crappiest boom box to use for working out, but ts4 doesn't have that option. Maybe allow the base punching bag? Idk.

I'm super exited for this! Thanks for working on adapting the rules!