I've always read that you should get a four-wheel alignment performed
if you make major changes to suspension geometry, such as lowering your
car. I am planning on buying camber adjusters for my front wheels; they
replace the damper pinch bolts on the MacPhersons. The maximum negative
camber I can set is 1.75 degrees, which I will be doing.

Is that going to require an alignment? I'm wondering if changing camber
values has an effect on your toe. Alignment service is expensive, and
my budget is tight.

And hopefully, having some negative camber up front will help with the
understeer...