You should have multiple Information Society songs,
Soft Cell - Tainted Love (extended version)
Gary Numan - Cars
Peter Schilling - Major Tom (Coming Home)
Wham - Careless Whisper, at the very least
Berlin - Sex, Metro, possibly more
The Cure - multiples
The Smiths - multiples
Edit:
I always liked the Bangles version of Hazy Shade of Winter, also Walk Like an Egyptian, Manic Monday.
You mentioned the Go-Gos, but you need more than vacation, add We Got the Beat and Our Lips Are Sealed.
Pet Shop Boys - multiple.
Timbuk 3 - The Future's So Bright (I Gotta Wear Shades)
Til Tuesday - Voices Carry
Crowded House - at least 3 songs.
Nothing screams 80s like Depeche Mode - People Are People (I'd throw in some more too)
And you may as well throw all of Pretty Hate Machine in there.