For a that model setup with stairs and tight sidewalks, tbh focus on a true one hand fold and a standing fold so it doesn't touch gross floors. Keep weight under about 14 pounds so it's easier on the stairs. Since your that model is three months and make sure the seat reclines deeply and the harness is snug, because a lot of tiny that model ones are meant for older babies. Good brakes that click solidly and front wheels that can lock will help on uneven sidewalks. When it arrives, practice folding it while holding something in your other arm which, yeah if it feels fussy now, it will be maddening at rush hour. Works great.
Fancy chore charts die by week two. Do fixed morning blocks and a hard cap (10–15 minutes) with a physical timer; if you miss your window, you wait. Clean your own mess immediately after you're done, then one person does a proper weekly clean on rotation. One shelf per person, one communal bin, and consumables are either split monthly or the buyer gets reimbursed that day. No guests during primetime hours and no grooming projects that take over the sink.