Will people stop making this type of shit up?
To do the Kop properly means moving the 'Kop' it is named after, that is, a large pile of earth.
en.wikipedia.org
As the Lane was badly bombed in WWII and we had a game called off in the 80's for a UXB found nearby on Lancing Road, there may well be more 'gifts' from the Luftwaffe in that heap. It will not be shifted in days or weeks, but will have to done slowly with modern day bomb detection expertise on hand.
Forget the steelwork, but I'd be amazed if the site could be cleared and levelled in much less than a year.