That's several hours worth of uploading - no wonder you time out. I think you need to look for another alternative...
First, optimize your graphics. Use a gif or jpg cleaner to get rid of extra stuff in the graphic files. You can also use PaintShop Pro to do this (just do a "save as" on your original file keeping the original file name. it will reduce the image file size considerably).
Second, look for some pdf alternatives. There are several free or low-cost pdf compilers that you can download. There are some names of programs posted in previous threads on this board, or you can do a search on any search engine - search for "free pdf compiler" or something similar.
Also, I think Adobe has some file size limitations - you may be out of luck there, but I'm not sure. There may be some other free online compilers available...