Start Monday.
A hundred days of ideas won't all fit into next week. Here's a realistic order to put them to work.
First 30 days
See It
Visualise all the work (Day 21). One retro change per sprint (Day 16).
By 90 days
Flow It
WIP limits (Day 22), flow metrics (Day 23), a real Definition of Done (Day 37).
By 6 months
Forecast It
Probabilistic forecasts (Day 46), one-page reporting (Day 55), health checks (Day 89).
By 12 months
Scale It
Cross-team planning if you need it (Day 77). Funding and HR partnerships (Days 58, 96).
Start small. Measure. Keep going.