Straton hope I catch you in time - While at this stage, dont select Standalone, its useless for Skyrim right now.
Choose Python to install, and the Python Wrye Bash. For all the python installation 'parts' just let the defaults happen .. next next etc
After it has successfully installed, have a look at the first post ^^, under Development, open the first spoiler to get instructions on installing the svn version (without it you will run into problems trying to launch BOSS and the new load ordering for Skyrim)
After you have the svn installed, check out post no.10 above.
And then, have a look in your skyrim data folder and delete the archiveinvalidationinvalidated.bsa - You will not need it for Skyrim.
Hope all goes well

Edit: One more tip; After the above go to your windows Start, All Programs, Wrye Bash - Then right click on Wrye Bash - Skyrim and choose send to desktop (if you did not select Standalone as part of your installation then this should be the correct icon) .. Now you can run it from your desktop icon.