It's hard to get discounts on a new, popular model. The best approach when that is the case is to have several dealers submit competing, written offers. Email can work well for that, although some dealerships don't take emails seriously. In that case, go from dealer to dealer, telling each that you are definitely going to order a Plus from the dealership with the best offer. Get it in writing, and repeat with as many dealers as possible.
This is important: if you have a car to trade, don't mention it. In fact, if they ask, say "no." Then, only after you have offers in writing, "change your mind" about trading a car in. That will give you their real price for the trade, instead of letting them try to get the trade in for free or nearly free.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.