You have the basics covered, except for a pedal wrench. At some point you'll want a spoke wrench, and if you ever go fixed, a lock ring tool, and chain whip (you can make your own).
If/when you replace your headset that will involve a number of tools, but the specifics depend on the headset.
Don't go out buying tools until the job comes up. Parts change every year or two, so a tool that makes sense today could be obsolete before you ever use it.
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