[Closed] Nevis Range Downhill Endurance

I've just booked myself in for the Nevis Range Downhill Endurance because I really fancied an epic day out for the summer solstice, however:

1) I've never raced DH before, only a few local mates races

2) I've never ridden the World Cup track before, so looks like the first run will be a scouting run. 

3) I've got no idea how I even go about training for this - lots of uplift days? Take an ebike out and do the same track over and over?

Anyone else entered into this? What should I expect other than lots and lots of midges?