after coilover install?

so heres the dealio, ive been waiting on some tein coilovers since november. but itll be worth it. cause im getting a deal, only $400 CAN. anyways. its gonna be my first time installing any coilovers. my biggest fear is my camber. so my question. after i install them how bad will my camber be? will i need a wheel alignment asap? or are there any preventative measures i can take to keep it the same?