Advise to start a new project

Hello,

I am about to start a new project and was looking for some advise.  I have a huge pile of hand written notes which will be typed, organized and put into Indesign for print.  Is it best to start the project layout within Indesign and start typing, or does it make better sense to type the notes first each in their own seperate document and then place them into Indesign.

Thanks for your help!