Hi u/CinnamoonBun - congratulations on your new camera and welcome to the community!

Here is what I recommend to get started:

• SilconPower 256GB CFast 2.0 card - $139.99 (you can't record BRAW with SD cards and SSDs require extra rigging)

• Azden SGM-250MX shotgun with mini-XLR jack - $199 (plugs right into the camera without an adapter cable)

• Camvate Cold Shoe Mount - $6.25 (to mount the mic)

• Neewer battery grip for your extra LP-E6 batteries - $69.99 (so you don't have to swap batteries during your shoot - reviewed here)

You don't need a cage to attach a side grip because there's a nice solid grip on the camera with the Neewer attached - but if you want or need another grip I recommend a $9.99 pistol grip like this one.

That's what I use, as seen here.

Hope this is helpful and good luck with your shoot next week!