I think you mean ISO
You should really try to get Business or Ultimate.
I thought there was only one disc for all of them, and you were able to use whatever version your key matched. Doesn't it give you an option to enter a key later and choose which version you want to install? You get something like 60 days before you have to enter a key, so just install Ultimate without a key.
That book is more than enough to get you by.