You won't need to replace clutch springs unless seriously tuning an engine and needing to upgrade them, plates are what you change. Will you be checking the steel plates for flatness while you're at it? Easy enough job (RTFM!) If the outer basket shows signs of wear it might be worth addressing (indents from the tabs on the friction plates on the "legs" of the basket) - basket removal normally requires a special tool to hold the basket still whilst undoing the centre nut, DON'T try and lock it by jamming a large tool through he bolt posts as you'll probably break one and then need to buy a new basket. No special tool needed for spring removal, probably just a 10mm socket, and ideally an accurate low-range torque wrench to tighten the bolts on reassembly.
