Good luck. I think you are going the correct way with that but needs to be lifted about 3 inches to be functional. Im not raining on your parade but i completely dispise my 13 wrx. I bought in 2012 and disliked it from the second week.. rattles, fit and finish is horrible, and i can keep going. Thats why it sits in the driveway under a cover, with 8300 miles on it. I like driving my 92 acclaim better. This is coming from someone who has owned almost every subaru and was a subaru mechanic for years.
I would definately recommend you put that thing high as you can. That front bumper will brake off in sections with the slightest tap. I would suggest buying one of those gorilla things.
Thats why im trading it in and never buying a new subaru ever again