2018 Chevy Colorado ZR2 “special order”

So, I’m new, to the forum, and to leasing.

I am looking to order and lease an 18 Colorado zr2 crew diesel ($49995 msrp), I am looking for a 24 or 36 month 12k a year set up. I’m looking for a zero down, I can get a GM employee discount if need be. I have been quoted $510 mo 36/36 $900 down on a $47k similar model in Michigan 48189 (missing options I cannot find paired with this motor)

My questions

  1. Does this seem like fair pricing to you?
  2. Do I have any negotiation power with an ordered vehicle?
  3. What kind of payment should I be looking at on the $50k truck?

I have only spoken with one dealer, and I hope to lock in pricing and order the truck in the next couple of weeks, so any insight is welcomed.