Currently it is working in air with the fans, as lighstspeed is waiting for the tanks, and yes 780 mh/s currently, not overlocked yet and not in immersion, we were waiting to dunk it in the fluid to overlock it.
If you think you are so smart mate, then go ahead and try to buy a RTX 3080 nowadays, the least price is around 2700 USD and you will be lucky if you can find it, so 8 cards will amount upto $21k alone not counting the other components.
Moreover the price is negotiable, and i have paid myself $22k for the rig and have waited 4 months to get it, but you can get it immediately.... think about it again
Cheers