I received Ether during the Pre-sale in June 2014 and received a JSON file and have the password. I have never tried to access these funds. I found out that I should have ETC & ETH due to the hard-fork in 2016 due to the DAO hack. My question is, what is the safest way to keep the ETH and sell the ETC or trade it for more ETH in July 2017?
Some posts mentioned to Split the funds by firstly creating a new ETC & ETH account by using something like My Ether Wallet (MEW). I then need to access the funds via the JSON file on the ETC & ETH blockchains seperately in MEW. On each chain (ETH & ETC) you then need to move the funds from the presale wallet to the new ETH & ETC accounts. Due to EIP-155 My Ether Wallet (MEW) should have replay protection so it should be as simple as that. Is this logic flawed in anyway? I am very worried that I do something wrong and lose any of the ETH or ETC. What would be the steps if I had to do this process via the official Ethereum Wallet on www.ethereum.org (Geth I think) or Mist?
If I keep the JSON file for another few years without accessing the funds will I still be able to access it or is it better to split it? I was thinking of getting maybe a hardware wallet if it is required to split it.