Just to add on to this
@Takw , no the pricing will stay the same as when you ordered. You’ll be able to see the pricing before you make the change.
Also, some people weren’t able to get the edit link to work. If you can’t get it to work, contact your SA or even Tesla chat and ask them to open up the payment method for you. That will allow you to make design changes, and then you can set it back to your payment method once you’re done.
I would also remove the trade in for now and re-do it once you get a VIN. When it expires, it may bump you back until you update the mileage. You’ll have a couple of weeks after getting a VIN to get everything situated since you’re in NY.