If you think you have no malware or keyloggers and that there is no way for your keys to have been harvested... then yes, you could simply import them into an offline wallet to HODL. An even better option would be to simply do nothing at all. You don't need to "claim" BCH, there is no deadline. The coins already exist on the BCH blockchain and can only be moved with your private keys.

Barring a total collapse of BCH, in which case it doesn't matter where or what you did with the coins, "your" BCH are safely linked to your BTC keys and can stay that way until you wish to sell/exchange them etc.

If you just want to be able to "see" your BCH to make yourself feel rich, just create a BCH watching-only wallet using your BTC addresses


No... you have selected the wrong option in the "Install Wizard"... as I said, you need to select "Import Bitcoin Addresses or Private keys"... DO NOT select "Standard Wallet"
https://i.imgur.com/CJjD7pb.png


Select that option, copy/paste the "PlainBase58" private keys when prompted (1 per line):
https://i.imgur.com/oswxW2G.png

Following that, ElectronCash will create the wallet, you'll see your BCH balance... you can then send to an Exchange.