i dont think the focus rs route will work cos you need the wider arches to pull it off.

the st170 is a safe tried and tested route to go that always looks good.

myself i'd fit the rieger rrx kit and slam it on some deep dish euro style rims,
like the 1 in this link:
http://www.rieger-tuning.de/0_BK_2009_UK/index.html

nice to see some more people on here from South Wales.