Let me briefly explain. In 2010 I made YT channel and the linked it to google account as everyone did. I also run blog on blogger, sadly on the same account. The point is, that when I try to link my google account with blogger, it appears with an URL that I created (I?) making my channel. I wonder if I can completely change it. If I try to create a new google+ page for my blog the URL can't be customized, as I provide link to my blog, verify that site and then try to change URL - it gives me URL in which I can only add letters and numbers. Useless. Any help?
I think that it is not possible. Google has strict rules for the custom URLs. They have to be conected to your name. I think you can make a g+ page with the name you want and wait to qualify for custom name. If I have understood your question this will work for you.