I've been moving away from this a bit lately as I try to cram more and more hop flavor into my hoppy beers, but for a while my rule of thumb had been:
APA's: ~20 IBU from FWH, no 60-minute addition, remainder in late additions
IPA's: 1/3 IBU from FWH, 1/3 from Chinook, Columbus or Nugget at 60 minutes, 1/3 from late additions.
Now I've started to move to:
APA's: ~40 IBU from FWH, 1-1.5 oz/gallon flameout hops added after wort hits ~185F, 30-minute hop stand
IPA's: ~30 IBU's from Columbus/Chinook/Nugget @60 min if I want more snap to my bitterness, otherwise no 60-minute addition, 3-4 oz/gallon at flameout as soon as all boiling activity stops, 90-minute hop stand