Help with PDF file

I have Adobe Acrobat Pro 7.0 and I am trying to edit some PDF docs I have. I want to make the files much smaller so I can send them via email and post on my website. Right now, the files are rich in pictures and are print ready. I have multiple files I want to combine into one and I am pretty sure I know how to do that. Right now one file is on average 11mb's. I want to get that down well below 1mb. Show I combine all the files and then make it smaller, or make them smaller individually. Also, the only way I can see to change file size is to "reduce file size" under the file menu where you can change based on which verison you select. I can't believe this in the only way to change the file size. I would assume there is a function like in photoshop where you can lower or raise the quality and have much more control. Can anyone help? Thanks