Putting CJK text into PostScript file

Our application, as one of several export options, generates PostScript files. We recently added support for UNICODE text to the application - all internal text is utf16. I am having trouble exporting asian (CJK) fonts correctly. Before the switch to UNICODE we supported ShiftJIS for Japanese. I know that PS does not directly support UNICODE. So, my question is, what is the best way to proceed given the facts that I have UNICODE text and I must generate a correct PS file which will display that text?
To my pea-sized brain, it looks like there are two possible paths...
1. Convert the utf16 to ShiftJIS (or whatever code page is required) and export as before? This seems doable, but strikes me as a hack since I would need to look at each code point and figure out which code page it is related to.
2. Re-encode the font? But how? I've looked at documentation for CID-keyed fonts and some sample code for re-encoding, but I admit that I have not yet had an aha! moment. I'm not even sure if I'm looking at the correct stuff.
Also, do we need to embed the font(s)? (I realize that CJK fonts can be large, but file size is not a major consideration.)
Thanks for any help.

At this point embedding & reencoding appear to be more advantageous from what I understand of your project.
I have written PostScript drivers that embed Type 1 format fonts by converting the binary printer font (.pfb) file into a 7-bit ascii PostScript file and inserting that in the PostScript output stream. The font just needs to be inserted so that it is available in the context of when it will be used (ie. before font use and same or more significant save/restore level.
I have also reencoded font characters within a PostScript job in order to access special characters that didn't exist in an EBCDIC character table using octal codes, but I'm not sure if this will suit your solution 2 or not.
Code sourced probably sourced from Adobe Developer Kit of many years ago:
/reencsmalldict 12 dict def
/ENC
{reencsmalldict begin
/newcodesandnames exch def
/newfontname exch def
/basefontname exch def
/basefontdict basefontname findfont def
/newfont basefontdict maxlength dict def
basefontdict
{exch dup /FID ne
{dup /Encoding eq
{exch dup length array copy newfont 3 1 roll put}
{exch newfont 3 1 roll put}
ifelse
{pop pop}
ifelse
}forall
newfont /FontName newfontname put
newcodesandnames aload pop
newcodesandnames length 2 idiv
{newfont /Encoding get 3 1 roll put}
repeat
newfontname newfont definefont pop
end
} def
/EVEC [
8#030 /mu
8#031 /eth
8#032 /Yacute
8#033 /brokenbar
8#034 /onehalf
8#200 /Aacute
8#201 /Acircumflex
8#202 /Adieresis
8#203 /Agrave
8#204 /Aring
8#205 /Atilde
8#206 /Ccedilla
8#207 /Eacute
8#210 /Ecircumflex
8#211 /Edieresis
8#212 /Egrave
8#213 /Iacute
8#214 /Icircumflex
8#215 /Idieresis
8#216 /Igrave
8#217 /Ntilde
8#220 /Oacute
8#221 /Ocircumflex
8#222 /Odieresis
8#223 /Ograve
8#224 /Otilde
8#225 /Scaron
8#226 /Uacute
8#227 /Ucircumflex
8#230 /Udieresis
8#231 /Ugrave
8#232 /Ydieresis
8#233 /Zcaron
8#234 /copyright
8#235 /registered
8#236 /trademark
8#237 /aacute
8#240 /acircumflex
8#260 /adieresis
8#265 /agrave
8#276 /aring
8#300 /atilde
8#311 /ccedilla
8#314 /eacute
8#321 /ecircumflex
8#322 /edieresis
8#323 /egrave
8#324 /iacute
8#325 /icircumflex
8#326 /idieresis
8#327 /igrave
8#330 /ntilde
8#331 /oacute
8#332 /ocircumflex
8#333 /odieresis
8#334 /ograve
8#335 /otilde
8#336 /scaron
8#337 /uacute
8#340 /ucircumflex
8#342 /udieresis
8#344 /ugrave
8#345 /ydieresis
8#346 /zcaron
8#347 /logicalnot
8#354 /minus
8#355 /threesuperior
8#356 /thorn
8#357 /twosuperior
8#360 /yacute
8#362 /threequarters
8#363 /Eth
8#364 /onequarter
8#366 /Thorn
8#367 /divide
8#374 /plusminus
8#375 /multiply
8#376 /onesuperior
8#377 /degree
] def
/WE {EVEC ENC}def
/HLN {/HLNWE findfont}bind def
/Helvetica-Narrow /HLNWE WE

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