Fair enough, in that case you probably don't want to go down from there.
But as to whether it is enough, the real thing is, you can't really go up much from a 2080. Sure, there's the 2080 Ti – for another $1000, giving roughly +30% performance for +80% price. Or SLI, doubling the price and hoping it works (and you can't even drop to the 2070, because it doesn't support it). And anyhow, the reviews I've seen seem to say that it is enough.
Recommended Power Supplies Recommended review sites Why stores shouldn't be removed RAM voltage
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I may occasionally give advice regarding (consumer) law, but it is only my opinion based on my reading – I am not a lawyer.
Romans 3:23; 6:23; 5:8; 10:9-10,13