@britannic, if I were you I would make waiting a month unacceptable. On 30 April 2019, Ubuntu 14.04 will reach end-of-life, and it will be very behind on security updates as more vulnerabilities get discovered. You need to upgrade now. It is only a matter of hours until you will NOT get updates or support.
And if you have any business or confidential/sensitive data on that server, I wouldn’t even think that it would be safe after a couple of weeks to a month. After looking at a lot of these security vulnerabilities, it’s not a safe gamble. Plus, there is that time between when a vulnerability is discovered and when it is patched (publicly or privately), which allows for a zero-day attack.