Like the black side skirts and front bits , looks purposefull.
r.e the ride height, in my experience you need to keep the zs natural stance which means the rear slightly higher than the front, having the back so low will build in more understeer, and understeer sucks .... it kills your speed.
I would suggest talking to car 13 or rally matt about set up, with how low your car is now and without any camber adjusters you are running probably 2 degrees negative camber all round, and things like this can really have a large effect on handling. Some negative camber can be good, very good indeed but it needs setting up.
Start with a known base set up and experiment from there just changing one thing at a time then assess the results, the reason i say change one thing at a time is because if you alter a few things and the car changes behaviour you wont know whats caused it ......oh and keep notes as it gets complicated!!!
and all this is sooo dependant on tyres and pressures too ....im tellin you its a flippin science, lol.