If you follow the downloadable step-by-step manual (part of the dmg package), it really does the install quite well. I have done it to 4 machines now (we have some legacy apps that are XP only) without incident.
I don't have anything as demanding as games, so I pair my bootcamp with Parallels to access those apps when required. You won't need this though.
will you point me to the downloadable step-by-step manual, thank you