Is it safe to wait days or week or should one redeem Bitcoin Cash from BTC immediately?
As long as you hold your own private keys safely it shouldn't make a difference now that the chain fork is done. I'd just advise waiting for a lot of confirmations before completing a transaction if you're receiving Bitcoin Cash (BCC aka XBC/BCH) from someone you don't trust right now (probably at least 8 - 12 confirmations until Bitcoin Cash difficulty is completely settled; and since block times on Bitcoin Cash are still long, that takes a while).
That sounds reasonable. I just want to redeem and hold BCCH
