My son has just got the DH versions and likes them. He started on flats with a sneaker type shoe and then tried some old SPD's (520's) with an XC shoe and could see advantages in both approaches - the support of a big platform and the security of a cleat connection - both of which the Mallets have.
it would be better if the bike wasn't worth stealing in the first place - in the future there should be an option to pair it to a bluetooth device (phone,watch) and if that device is out of range the bike turns on but the motor is frozen
I clamp mine as per the first photo (alloy though not carbon) as the bike balances at that point and only a small clamping force is required. Couldn't clamp at the seatpost as there is not enough out of the frame.
Your range will improve with your fitness, but losing weight would also help as the batteries make us all acutely aware of the power to weight ratio and the key variable of gradient. Compared to when I got my bike 9 months ago I am the same weight, but can get up shallower climbs with lower...
I weigh about the same and I run my alloy Levo Comp at 250psi on the rear, nowhere near the limit and probably too much sag, but never bottom out. Likewise the forks are at 110 psi instead of the recommended 140 or so, no issues,but I am just trail riding with relatively small jumps and step...
No you'll be fine. I'm 120kg and ride a 19 Levo Comp, 90% off-road. No motor issues at all, not even near the max pressure on either fork or shock, wheels still evenly tensioned and true.