ST-X

Okay, so I'm not a major fan of wheel spacers (getting that out there before anyone lambasts me for a stupid idea). However, I've currently got Inovite PFF7 replicas on my WRX and want to go back to 17". My first thought is to go for the original STI alloys which are light(ish), tough and 7.5" wide vs stock 7" WRX wheels. However, while I like these, I really much prefer the widetrack Enkei wheels which of course only come in 114.3mm PCD. As well as preferring the look, they're also 8" wide. So the two questions;
- Has anyone done this and can confirm the minimum spacer size needed for the adaptors (and recommend a brand)?
- If anyone has, can they confirm there's no rubbing?
- And finally, does anyone have any pictures of how they sit in the arches (I'm keen to avoid any daft looking things where the wheels sit out too far)?

Thanks!