All right thank you very much 
I am much more content with this now.
I am much more content with this now. Be aware you should still keep your blockchain account safe, you imported it to electrum wallet now it can be accessed both from blockchain account and electrum wallet so your attack surface doubled basically
Yes that's definitely advisable. Unless there's a way to deactivate/delete your blockchain account (you can always undo this by redeaming the seed again on their site - the 12 word phrase).