Waylons

Hey wondering about a 4" lift wondering how much i need to do with spacers on top of strut do i need to offset strut spacer ? What will i need to add to the bottom % spacer to lower blocks? Also what size tires might i expect to get under it and will i have to do anything with the C/V axles.... sorry thats a broad first question just been searching for answers for the build i want to start never played with a Subaru before 96 legacy outback wagon