Might be a good idea to remove that file or the link from your post as it contains client information.
Paul mentioned the images for the entourage you’ve imported. In some cases, as in the covers of the books on the ledge, the images are much larger than they need to be since you can’t see moore than the spines of the books. This is one of those textures.
The bar sink has an image for the strainer in the drain.Is that really a benefit for the way the sink is used in your model? If not, removing it will help towards simplifying your model. It reduces SU and thus LO file size but it also reduces the work your graphics card has to do.
It’s a good idea to import entourage components into a separate SketchUp file so you can clean them up before inserting them into your project. Anything you can do to improve the efficiency of your SketchUp model will go a long way to improving the LayOut file.
Another place you could give some consideration to reducing is the images on your mood board page(s). Once you get them positions and sized on the page, you could edit them in an external editor and adjust their actual size to match.
Cleaning up the SketchUp files will be a big help, though. I corrected theincorrect tag usage and purged unused stuff from the larger of the two SketchUp files used in the project. It reduced the file size by about 20%.