Billies on highest setting

Sorry if this has been asked to death, but can I set my 5100's on 2.5 (highest setting) without doing anything else? I have off-set wheels which get the tire away from the UCA but will good alignment still be possible? I'm trying to stuff on 285's after seeing 265's work fine with the Billies at 3rd setting.

 

You can get a halfway decent alignment with a little positive camber. If you do much highway/freeway driving you might want to consider upper arms.

Since you're planning on running 285's I think you're really going to want/need the uppers to add caster.