That is almost 6 months away. There is nothing to worry about, prior to expiry you will get notifications and around 28 days prior to that the Registration interface will change to allow you to re-register.
My expiry date is 19 February 2014 and I have been renewing my registration for over 9 years without issue.
Only if you ignore all of the reminders and the change in the registration interface would you have any issue, from your post, I rather doubt you would ignore the notifications.