Just sayin...
I see you're looking for an aero screen and bar backs. Before you go on a hunt and fork over cash for a solution that may not work...
I have both and having both means the wind will be directed right into your face if you're 5'8" to 6' You'd likely need a laminar lip on the top of the screen. I'd use a shorter screen to put the wind on your chest or pass on the bar backs with a taller screen. That will place your upper body a little lower. I have a Shoei modular helmet and it whistles like crazy. Your screen would have to be stupidly high to solve this issue. The wind would be better on your chest and have a helmet that's really good at wind management.
So...
Lower screen with a bar back. Wind hits Chest
Higher screen without a bar back. Wind *might* go over your head.
Both: Get a laminar lip or equivalent. Wind *might* go over your head.
Maybe other people have a different experience or advice. This particular version of a bike isn't going to be easy to mitigate wind but that combination may not help.
Exactly. I have already been through this. I tried taking the barbacks off [uncomfortable for me] Got the tallest screen I could buy [ still wasn't tall enough] . Ended up cutting down the tall ws so It's shorter than stock, still wind noise, but the wind hits my chest, instead of the buffeting noise hitting me right at the helmet.