I'm guilty of not reading all the posts thoroughly ...
When my wife bought her new Camaro, she researched it for about 1 year
When it came time to buy, they didn't have in stock what she wanted, but a step up
The floor salesman wasn't much help, so she went to the internet guy
He let her test drive it, which apparently doesn't happen much with Camaros and Corvettes
The internet salesman then knocked a big whack off the price of the one they had in stock, as she didn't want all the extras, and she paid basically what she wanted to for a step up
Short story in long version, but, if you're not happy, back away .....
If it's what you want, and the price is close enough to what you feel is right, DO IT
Ya, it's always scary making the commitment, but it's what you were going to do anyway
Lastly, because you started this thread, I'll say this ...
It sounds like you are uncomfortable with what's going on, and, IMHO, you should back away for a week or month to re-think it
In the meantime, get your money back
Why are you questioning yourself is the question I'd be posing to myself