---- eeeeeee --- Double posting
Using a combination of Diolen and the very cheap "black Stuff" will definitely give you the stiffest and strongest "body skin" for the weight.
Also use vacuum bagging or infusion, to ensure a good fibre to resin ratio. = low weight ..
A layer of GC50 will make the skin heavier than needed, i suggest 2-k automotive paint on top of infused panels...
With a little care in reinforcing, curving and maybe "corrugating" the "skin" you probably only need 3 layers, and in non stressed areas you can probably make do with one layer of black stuff and one of Diolen
For my race-bike fairings I use one layer of 320 gsm satin weave CF at 45 deg to one layer of 200 gsm twill Carbonfibre, Infused or vac bagged with automotive 2-comp paint on top.
Reducing weight is crucial in electric car racing... but you already know that ...
Good luck!!
"Sapere Aude"... Dare to KNOW!
The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind...
103% of all people do not understand statistics...
Do not adjust our mind, theres a fault in reality :-)