I now have generated addresses for my paper wallets. When I go to send my BTC from my Multibit wallet to these paper wallets, do I click on send or export?
Send.
Also is there a transaction fee for doing this & if so roughly how much would it be?
If you are using the most recent version of MultiBit, it should let you know if a transaction fee is necessary. It will depend on the specifics of your transaction. If a fee is advised, it will most likely be 0.0001 BTC per kilobyte.