2 months
Perhaps a simple split down the middle, with a faction on either side (NOD + GDI), and some tiberium in the middle? As if the sides were warring over the crystals.
Depending on how detailed you wanna go, you could research some iconic units and add them. Seeing Kane’s beautiful bald head on a cake would be excellent.

I believe it. Honestly, from the trailer I saw, this kind of budget makes no sense