Hi TacticSiege, and welcome to the Seven Forums
What you do not say is how are you going to partition the Drives, Are you going to do this as you install the first OS or from some form of 3rd party Live CD, I would personally suggest the latter as it will give you more control.
The 200MB partition is only created by windows 7 If installing to an empty un-partitioned (or singe partition drive), so should not be an issue if vista is already installed, It should also give you the option to not install this partition if 7 is installed first.
If you are creating a partition(s) for the Page files to get most benefit these should be on a separate drive from the OS itself
It is possible when installing Linux to install Grub to the actual linux partition and use the Windows 7 (or Vista) boot loader to control everything.
I'm sure this thread will not be finished quickly so have not provided links but will do so if you want fuller information.