2003 to 2012 R2 Essentials Migration

I am migrating SBS 2003 to Essentials 2012 R2, I've done 2 previously but am missing something.
Following the document below I've done all the source server prep, everything appears good but when I continue the installation on the 2012 server I only get the option to install as the first domain controller, I don't have the option to install in an existing domain. What have I missed?
http://technet.microsoft.com/en-us/library/dn408637.aspx
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dpachecoAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
I'd suggest reading over the Microsoft blog on deploying Essentials 2012 R2 in an existing domain:
http://blogs.technet.com/b/sbs/archive/2014/02/21/deploying-windows-server-2012-r2-essentials-in-an-existing-active-directory-environment.aspx (Lots of pictures)
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Cliff GaliherCommented:
In 2012 R2, there is no special wizard to add essentials into an existing domain. If you follow *all* of the steps on the document you linked to, it'll work. But it is important to notice that one of the first things mentioned on the page you linked to is "if the essentials wizard starts, cancel it."  That is important in introducing essentials into an existing domain in R2.
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dpachecoAuthor Commented:
Yes, I did cancel it.
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dpachecoAuthor Commented:
Yes, this is what I was missing. I forgot to install AD, duh.
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Windows Server 2012

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