I wanted to do the same as you are making at the moment. But I did not like the look of all the loose pieces put together. The plate on top of bumper, bumper itself, the Kamei spoiler and the splitter plate. Thats why I bought a Remmele front bumper and I am adding polyester extensions to fill the gaps on the sides and on top between bumper and bonnet/front fenders. The end result will look completly different than yours. I bought the bumper in Hannover on the firtst of May but I am not finnished jet. (still talking about it instead of finishing the thing.
This,
has to look like this when it's finnished.
Seeing youre work motivates me again to do something myself.