the TDI 150 came with the 3 spoke wheel as standard so don't know why its got the grandad style wheel, cruise can be retro fitted for £100 (parts labour at a garage)
xenons were an option, but most TDI 150's had them, you can spot them by the double stack indicator (see my pics) (no front fog)
77K is fine for a TDI 150 mines on 95K (2002)
the anniversary are only 3 door and only in black, red and silver, they also wont have options such as xenons, leather, sun roof and the extra rear doors

i have noticed the mk4 have tumbled in price recently.
this is mainly on the petrol GTI's as they are more common than the TDI's