lift/mods/tires for my Soob. I missed the FAQ. . .

I want to get a newer (03-05) Imprezza RS and lift it up 4 inches (im new to subarus, independant suspensions etc...) Would useing longer struts like you mention (whats a good model, a newer forester?) and a "body lift" (hah body lift on a unitbody design) method like allied armamant or someone like that (any suggestions) work? Is it better to keep the Impreza Springs to lessen the screwed up angles created by the longer suspension? Anybody done this on this new of an Impreza?