If you are planning to make a multilingual site, you should use utf8 throughout. Otherwise, you'll just get really, really confused.
There is no non-unicode character set which includes all the characters you're talking about.
Unless you are superhuman, you will fail to make a site which uses multiple character sets. Don't do it. Use utf8 for the input, output, database and everything else.
If you're going to have several languages in the database- great, but do it in utf8, PLEASE!
Mark