Google services in W8/WP8?

I'm a fan of how Windows 8 looks in general and I like the design of the Lumia 920. But my only issue is that it seems like you have to use Microsoft's services to use them. I don't like Bing or Bing Maps and I would much prefer to use Google's services more (gmail, google, google maps, google play music).

My question is is it going to be possible to use these products without having to use Microsofts services?