C6-32 bits & C7-64 bits, any how-to advice or warnings

I’ve been running the 32 bit version C6, but plan on installing C7 64 bit. I intend to keep C6 available for awhile (forever?). Any advice on how to do this and not cause myself problems. I never used the VST-bridge, so hopefully that keeps things simpler. My chief concern is about installing the 64 bit UAD plugs and having that mess up the 32 bit version I need for C6. Well actually my real chief concern is that I don’t know what I should be concerned about.

All files relating to 64 bit applications are stored in an alternative Program Files folder for Windows systems.

Thanks. I see how that works now.