Frey AM1000 purchase configuration advice?

Im going to purchase a Frey AM1000 and wondering if anyone could give me tips for the purchase, for example is there any spare parts I should request, or any mods I should look out for? I am a bit of a noob with mountain bike parts, but I love the look of this bike, so pumped!

This is the current configuration which I will be getting shipped to Australia:

Bafang Ultra 48V 1000W mid drive system with throttle;
48V 21AH Samsung 35E cells powered big capacity battery;
ROCKSHOX YARI 160mm air suspension fork;
ROCKSHOX DELUXE RL rear suspension;
MAGURA MT5e 4-piston hydraulic brake with power cut function for ebike use;
SHIMANO XT M8000 11 speed group set;
MAXXIS 27.5*2.8" mountain tire.
Price is 3120USD not include shipping cost.

Thank you in andvance.