Updating SQL Server 2008 R2 Express

I currently have SQL Server 2008 r2 Express installed. I'm looking at this page, http://www.microsoft.com/en-us/download/details.aspx?id=30438, and I see various downloads for SP2. How can I update to SP2 and also install SSMSE for the first time? Is there a way to do both at the same time, or must I do it in two different downloads? (That is to say, can I use SQLEXPRWT_x64_ENU.exe to accomplish the update to SP2 and the new installation of SSMSE?)
A secondary question: is it recommendable to upgrade to SQL Server 2012 Express? My case is that that I'm developing a website using ASP.NET 4 and MVC 3 in Visual Studio 2010 Express. Will SQL Server 2012 Express work seamlessly with VS 2010 Express? If so, then what is the best way to upgrade to SQL Server 2012 Express? Should I uninstall/reinstall? Also, will web hosting services support SQL Server 2012 right away or will the ...