Well you chose a good drone - I've had mine for nearly 2 months - Brilliant!
I bought 2x 65gig micro SD cards instead of 1 big one.
128G is huge storage, and if it goes wrong - better not to have all your eggs in 1 basket.
Spare gimbal cover is a good idea. Probably not the easiest of things to find if they get lost.
The gimbal is delicate so it needs protecting.
I am going to get a couple of spares now.
Feel free to share your replacement gimbal links.