OVERCOMING OR PLANNING FOR BARRIERS
The problem with not keeping the account up to date due to not enough staff, or time spent on it could be prevented or limited by extra experienced staff being employed prior to the account being made to deal with the extra work load. This would also help with the knowledge and skills, because if they are experience then they can maintain the account professionally, as well as train original workers to the same standard.
A way that you could overcome the social media guidelines barrier, is by providing all employees with access to the Twitter social media guidelines. This could be done by either providing a PDF document, which can be easily accessed through their CDK careers area, or by providing workshops for the guidelines as a training course. If they have access and knowledge of the guidelines and follow them, then there should not be a problem with breaches of the guidelines.