Front Suspension adjustment

I'm looking into making some new longer control arms with coil overs.And I was curious about how much adjustment I can pull out of the stock mounts?After all said and done the new A arms would be about 1.5" wider per side and the ride height would be 3" taller than stock.I'm looking to have final alignment numbers at ride height of:

Caster +6*
Camber: -1.0* to -1.5*
Toe in: 1/16"

Obviously I'm gonna have to build in some caster/camber but how much adjustment did the factory leave for my 73 Scamp?