Style chooser

Need recommandation and advise.
It's almost time for me to change my tyres, discs, and brake pads.
1) Do I need to redo alignment if I change my tyres then only later change the Disc & pads?
2) What Good/Reliable Brand of 320mm Ventilated Disc and Pads ?
3) Any shops or seller for the Disc and Pads?
4) Any work shops that perform runout check?
5) What else do I need to take into consideration?