Orange cake, orange curd

I am going to make a cake for a birthday at the end of this month (surprise for a friend), and I have been told by my source that orange is the favourite.

I have a couple of ideas that I would like your feedback on please, and am thinking a vanilla and orange pairing for icing and cake.

Firstly, orange flavoured cake with a vanilla bean filling and icing (buttercream).

Or, vanilla cake with orange curd filling, and vanilla buttercream icing.

Also thinking of some glazed oranges (as in the syrupy orange segments) as a topping, OR sugared peel (but I did have that on her husband's cake a couple of weeks ago.....)

I am still in love with velvet textured cakes, so either way, I will more than likely go down velvet cake road.

Obviously I'm going for a bit special, which is new for me (have mainly done pretty plain cakes for morning teas, lunchboxes, etc), so thoughts most appreciated! :) Many thanks!

I like the orange cake idea with vanilla filling and icing. Orange segments on top of vanilla icing would really "pop" too. Yum!!

Have you decided?