Tool upgrades create value when they reduce a task you repeat constantly. Upgrade around the routine that is costing the most time or energy.
Upgrade the tool that solves the biggest bottleneck
Choose the task that is repeatedly slowing the day instead of upgrading tools in a fixed order.
Time upgrades around your schedule
Plan around days when the tool will be less important so the upgrade does not disrupt core routines.
Look for energy savings, not only speed
A tool can be valuable because it preserves energy for other activities, even if the time savings seem small.
Reassess after each upgrade
Once one routine becomes easier, the next bottleneck may be somewhere else.