Just set the front springs all the way down as far as they will go 1% and set the wedge to -1.5 and youwill be all set to go, however I can't help you will the slow accleration going into the 4 gear i have that to my advice just block like crazy.

slide all gears to the left

As above set the front springs to 1%, however, -1.5 wedge never worked good for me, so
instead I jacked the tire pressure up to max. Also my gear ratio was halfway between 9
and 10.