Hi Lauren, the dimensions given are the same as were originally advised as 'overall' but Very have since updated as you state. However, the set also includes a corner section, with no dimensions actually given, which will increase the width again by at least half the depth of each sofa. So, regrettably, with no margin of error, it's not going to be suitable for the space you have available.
Sorry for the confusion. The onsite details will be updated with the correct information.