Mitch have a read of my race car thread - I did a coil over conversion on the front of it and that would answer most of your questions. A decent search of the forums would also have done that :P
If you want to be able to really adjust your front ride height without depending on off the shelf springs, you should go a coil-over conversion. There is no point doing this with the standard Corolla strut tube as the inserts for them are just about non-existent. Upgrade to a Corona XT130 strut, or I imagine you can make an AE86 one work as well, and you open up your options a lot. No point bolting your old brakes back on to these (if it would even work), leave what they come with on the car for much better stopping power.
KE3*/5* LCA's are the same length as Coronas, so they give no change to camber. Sigma LCA's are alleged to fit and will give a bit more camber, but you need to rework the taper on the ball joint hole to suit the Corolla balljoint apparently. The same applies for Mx62 Cresside LCA's I believe.
Using Cusco Camber tops I got just over 2 degrees negative camber. They can be sourced from A J Pee S in Adelaide (weird spelling to avoid forum editting rules) and if you mention Adam with the KE35 race car recommended you, he will give you free shipping. I think they are $360ish for the pair.