May I personally suggest that you get away from coinbase.  It is good to have an account with them, for you can cheaply change your BTC to Paypal, but their fees are out of the area for transaction fees to transfer it to someone else.  Also they always seem to be on a long delay for transactions, sometimes even as long as a day.  Everyone says that the other places are the same, but I use a number of different wallets and they are not all that expensive and when coinbase has taken a few hours to process a transaction, I have processed 3 or more elsewhere.