Something that Craig learned, was that crosswinds are brutal when you have a long tail like that.
Window screen allows some of the crosswind air to pass through, while directing the rest of the air in the path you want.
Edit : I was only slightly familiar with the bike.
After looking at it again, I have to say, I would love to see you come close to the look.
The main thing I worry about is safety. You would be so low to the ground that people would not see you - and those that do wouldn't be able to judge at what distance you were because it's so foreign to people.
https://commons.m.wikimedia.org/wiki...Akira_moto.jpg
I see you just posted the lay back design. Love it.
Most definitely has the Akira vibes.
I wonder if there is a way to lay back the entire front end without too much work . ( future designs )
I like the angular look too of your sketch.
BTW, You have skills with your art !