So are you just wanting to install Word, PowerPoint & Excel? Then why install Microsoft Office in the first place.
There are so many free options to choose from.
Microsoft Excel Viewer Free-
http://www.microsoft.com/en-us/download/details.aspx?id=10
Microsoft Word Viewer Free-
http://www.microsoft.com/en-us/download/details.aspx?id=4
Microsoft PowerPoint Viewer Free-
http://www.microsoft.com/en-us/download/details.aspx?id=13
Microsoft OneNote 2013 Free-
http://www.onenote.com/Download
You best option is to avoid that large installer and just install the single components that you want.
No reason to instal an office suite if you are not going to be using all of its features.
Enjoy!!