Better strategy is: Create a Tails (https://tails.net) boot thumb stick, boot it up without connection to the internet, create your wallet on it with electrum and write down the 24 seed words. Then use any of the initial wallet addresses to Serbs your Bitcoin to.

Advantage: The chance of making a mistake in writing down the seed words or not being able to read them after years is several orders of magnitude lower than it is for a completely random string of characters.