If your talking that much why not just invest in a hardware wallet like a Trezor?
They changed their software license from GPL to a much more restrictive license. A dick move that moves away from the open nature if the bitcoin ecosystem.
Multisg.
Disclaimer: I work for a multisig wallet, Coinkite. That's where I keep my coins. Regardless who you use, make sure you don't have a single point of failure, as loss can also happen. For large amounts, I suggest a mult-signature setup where the majority quorum of keys is generated offline. Our info here