I personally would have issues with using a larger capacity SD Card. Reviewing up to 28 hours of imagery might indeed be feasible for the average person, but a theoretical 112 hours of imagery would be a different matter. Even using fast review facilities, the process may be untenable for many people.
CCTV recordings in this situation needs regular review in order to catch the culprit. It's not the same situation as in a shop for example, where CCTV is checked to observe the behaviour of one or more individuals over a limited time period. Large SD cards enable the CCTV owner to review many days of CCTV imagery and the culprit could have done the misdemeanor nearly 5 days prior to the reviewer seeing him/her at work. He could have gone on holiday in the meantime.
If you've got CCTV, you've got to put the effort in.