-snip-
I don't want anyone to access the wallet file, except my self.
Use your own machine (e.g. personal laptop noone else is using) and use full disk encryption.
Well I am. I was thinking more of protecting my self from a malware och keylogger. Thats why I wanted to encrypt my wallet file, and the whole folder where my wallet is stored.
I was thinking of Axcrypt but I've seen some good and some bad reviews about it, not sure.
I also saw something called folder lock, seems like a good encryption software. But not sure which one to use. I just need something simple and reliable. And I know that even with encryption, you can not store your wallet or wallet file 100% safe.
And just in case, is it worth to save the private keys somewhere, when using electrum? Or is just the seed enough.. because every page about how to save your wallet is mentioning that one should save the private keys.