First of all this thread should be moved Altcoin Discussion or in the Beginners and help section.

And you are right that we have seen many cases of hacking in using keystore for backup. And you recommended metamask wallet so it is good to use and you should write your seed phrase at safe place but stll your funds are online so there is possiblity of hack.

So the second option is much better then the first. If you have a big amount of funds so you should buy a hardware wallet which is a extra layer of security. So with this your funds will be safe and you can move them after connecting with internet. And this is also recommend for those who are holder and hold the funds for long time.