Awesome! Where was your controller? I have the handlebar mount for the RC 2 controller ready (see pics below) while I also intend to carry my RC Pro 2 controller in my back pack, not that I need to but I'll use it at the mid-way point where...
The Lowepro Droneguard BP 250 is great for carrying the M4P. I used this with a Autel Evo 2 for 5 years; it is still in great shape and will now serve well for the M4P.
It has room for the drone, 3 batteries, ND case and RC 2 Pro with lanyard...