I have a question on the size...

How big is the mod when you install it? I have around 600 mb of free space (small hard drive) and when I try and install ESF, it says "You dont have enough space on that drive."

Does this mean ESF is over 600 mb in size when installed...?

it's less than that ..

the "size on disk" read this:
165 MB (173,768,704 bytes)