63 Valiant disc brake swap kits?

Man, stoked! Ordered, but waiting on freight quote...default was enough to buy more parts! Checking back brakes while I'm there...local O'Reilly's had wheel cylinders, and can get shoes and drums next day. So, ordering a set! I think what's on it still looks good, but I'm waffling, thinking I should 'go through all the brakes'...would you replace these drums and shoes? I haven't driven it, so no idea on how they act. Springs, etc. look great, though, so whoo!

Thanks, all!