Is active Admin a good fit for a complex admin interface for a daily deal rails 3.2 app?

Is active Admin a good fit for a complex admin interface for a daily deal
rails 3.2 app?

I am building a daily deal app in Rails.
I just installed activeadmin gem which is really great and easy so that I
can now create and monitor users. My need for creating and managing deals
is quite complex:
I need to be able with the basic text fields (name of deal, date of deals,
product name...) to add on the Deal's page stuff that for me (as a Rails
newbie), i would associate more with a real CMS than with active admin,
that is to say, i must add pictures (through url addresses on amazon S3),
embed videos, associate features on certain deals such as vote up or down,
and have a sort of html5 WYSIWYG html/text editor allowing me like i'd do
on a wordpress site to move/add/arrange/re-position between each others
texts, videos, sliders, call to action buttons, videos and much more.
I feel activeadmin is great for basic monitoring and maybe creation of
objects for simple cases but as it works so much "automagically" I fear I
won't have enough control or ability to bring many features and CMS stuff
into active admin that i should build the "Deals admin Interface" on my
own pages and not rely on active Admin for this.
What do you think about it ? Can I put all that stuff "inside" my Active
Admin pages/controllers...or should I build it "outside" active admin ?
Thanks for your help!