I like this build! It'll perform the tasks that you mentioned quite well while still giving you some room for updates down the road.
If you're looking to add another GPU in the future, I'd probably recommend a larger PSU, the recommend PSU for a 3080 is a 750W PSU, adding another GPU would exceed that recommendation, so I'd say an 850W PSU would give you enough headroom with the rest of the parts in your system.
Let me know if you have any other questions or concerns.
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