Whats "worth it" or not depends on the individual. I am going to re direct you to the following thread to ask that question or read up on peoples opinions on that:
Um... Mods have already stated that criticism of others' plans to defer delivery to get the car they want isn't a thing they're tolerating. Maybe consider taking this down or just letting this go? Yeah, a few others have mentioned this. If Mods wish to remove it that's fine, but as the...
teslamotorsclub.com
The reason I am doing that is, there are two camps on this, and it turns into a lot of "back and forth".
Changing your payment from cash to financing would not automatically make you get a new vin, unless you release that one for some reason by telling them you dont want it.