Around 1000-1100 watts, is that correct?
I would say, yes. It is overkill. Plants can have too much light, I don't know exactly when that would happen in terms of watts per sq foot.
Usually with high quality LED you want 30-50 watts per sq foot with LED. You are around 60-65 if I did my math right.
Not super far over, probably not enough to cause damage, but I'd probably take out 1 of the spiders personally.