Well, this is not the classic sealion approach for a landing on a broad front with an insufficient navy and tranport capacity.
His idea is a para landing supported by Ju 52 transported infantry on a small perimeter near Folkestone. The Luftwaffes job is to reach air superiority over this small area.
Then the RN is lured into the northsea by a fake invasion fleet and decimated like in Crete 41.
After that it becomes easier to support and enlarge the first perimeter.
The story gives a lot of insights into the thinking process of the german staff. Hope 2nd part comes soon.