1. install os
2. install office if you use it
3. install all windows updates plus dotnet framework 3.5 and 4.5.3
4. install drivers
5. install security and backup software
6. now install uxstyle oe uxthemepatcher(the other tools you need to theme your system you can actually install at anytime, but do not do blackglass until you actually need it)

in the above image you have blackglass enabled.