I also changed from my original resort because as you said, you're willing to shell out more money, but your guests probably aren't!
As I was researching, I started to have really bad anxiety about telling guests the price of the trip. My TA kept assuring me that they were good prices, etc., but even when I ran the numbers by my MOH and BM's they were pretty shocked and said they might not be able to afford to come.
That's when I decided that price was really important to me and luckily found a 5 star resort for a decent price.
Even still, some people thought it was too much money - you have to remember, that most people are used to booking last minute trips, which with a wedding, you just can't afford to do. But I consider our rate to be really good for the quality of the resort and those who really want to come will be there.
Oh, and most likely 1 week will be almost the same price as 4 days from Canada.