Not sure there is a big LG Plant in Pyeongtaek but there is Ssangyong (쌍용) car plant nearby.  However, Pyeongtaek is not that small so have to check that out.
 
Anyway I am moving to a place in Seoul "Hakye", my phonetic spelling, but spelt in Korean "하계".  I would like to work freelance in the city working for major corporations (that's my next goal) and then hopefully setup an officetel Teaching business English to company CEO's (but that's a seperate subject and shall start a different thread about starting a business in Korea).  Is anyone in Seoul?  What's the city like?  Does anyone teach privately to corporations?  More importantly, what is the expected salary of a certified teacher in Korea with professional qualifications (per hour and monthly)? 
Thx all for the support.  This community is invaluable. 
ps - Susan, I shall definately look at taking a DELTA in a few years.  It is all good experience.  Btw, I am from the UK so have no trouble getting employment in the EU but my wife is a different matter as she is Korean and still hasn't her British Passport. 
