Photo ok to print

Hi - I am new to Photoshop and InDesign and learning the ropes so I haven't printed anything yet or used any of my designs anywhere. I have read all the Adobe Stock licence info but I do find it confusing. I pay for an enhanced licence. My plan for my first book was to use four Adobe Stock photos on the cover in a montage design but still seeking to confirm if that's allowed. I haven't modified the individual images in the montage - I just put placed them in a photo grid. But I can modify them if I need to, to stay within the legal terms. I won't do anything I'm not allowed to do in the terms of the licence but I really need more clarity. I talked to someone in Adobe chat about this yesterday and they were great but I am still confused.  For instance, if I make a 50-page book, can I use Adobe Stock images without any modifications/redesign since the book will mostly have text rather than being a photo book.  Or do I have to edit every single image, say in Photoshop.  I’m asking the question because here's what the Adobe license terms page says:  "You may include the asset in some types of products, such as inside a textbook, as long as the primary value of the product is not the asset itself." I also have the question of how much modification is required for each photo. Can you just put a border around an image? Or just change the colour scheme? I understand you can use the AI generated images without editing.