Hello all,

I have some old coins in multibit 0.5.10.  While I have no intention of selling the coins anytime soon, I would like to have them in a wallet where if I decide to sell them I can have them on an exchange as soon as I fire up the wallet and hit send.  It seems that putting the keys into electrum via this video: https://www.youtube.com/watch?v=LaijbTcxsv8&feature=youtu.be is the way to go.  

I have a couple questions about this.  My Multibit key export has two private keys listed.  If I enter them both into electrum at the same time is this okay?  

Second and most important question.  If successfully import the coins into electrum and back up the private keys on electrum, will the coins be in the new private key backup?  I have read things about coins not being in the backups of wallets they are transferred to.  Here is an example of what I mean.  I import my keys into electrum and my coins are now in electrum.  If I export the private keys from electrum, will they still have the balance of my coins if I import them into a different wallet software?  Do I get new private keys when my coins are in electrum?

Third, if I just keep the coins in multibit on my old machine and keep it offline, would that be a suitable method of storage for years to come?  Meaning, if I have the compressed keys from multibit exported and in 5 years decide to sell, will I still just be able to import them into another wallet and sell them?

Sorry for the in depth question but I'm at the point where these are making me lose sleep and I would really appreciate some insight.

Also, one last thing, electrum does let you export private keys, correct?