Congrats -- great machine, you'll be happy!
The ability to easily write and read files on your BootCamp partition depends greatly on which format you choose, NTFS or FAT.
NTFS is read only accessible by the Mac Finder... meaning, that you'll only be able to read those files and not edit or add to them from the Mac side.
However, with FAT (max partition size of 32GB) you can read or write from either side. Be forewarned though, that you can accidentially edit or modify a meant-to-be "hidden" file from the Mac side.
Have you explored SWSoft Parallels? With that software you can have the best of both worlds and keep all of your files on the Mac partition and share the files with Windows... You can learn all about it either in this forum (Alternative OS Section) or visition parallels.com
Good Luck!