In my experience, there's just no way to tell right off.
Some vehicles will have enough play to align properly, and others won't.
I needed caster\camber plates after the eibach spring install...
My advice, wait a bit to get the extra $150.00 or so and get the plates.
Its cheaper than going through tires...

__________________
Uncle Sam
"What the hell is up with all the gauges?
Calling Captain Kirk, your ride awaits... Phasers on stun...."