Are there all in one external water pump solutions that can handle more than one 3090 at a time? This would be about 10 or so Aorus Waterface 3090s. Or is it a better idea to convert them back to fan+heatsink configuration?
Yes, there are, but you'll reduce your ROI substancially.
Also consider to buy watercooled backplates for the 3090 cards, those GDDR6X memories are really toasty.
