First of all, I happen to like Westgate, but I have a vacation club, not a timeshare, and yes, you are right to be cautious about getting ripped off. When I bought my vacation club, I sweated bullets agonizing over whether I should back out during my grace period. I must have made up my mind once and for all at least 100 times before I finally decided to go through with it. I found it very difficult to find out what exactly I was getting for my money. I was constantly calling customer service and asking question, reading all the negative reviews, and looking at their website and watching YouTube videos of their resorts.
I don't know much about the timeshares, but I can tell you what happened when I agreed to convert my vacation club, which I paid $5,000.00 for, to a timeshare with an additional price of $10,000.00 and then decided I didn't want it. They told me that I couldn't do that (which was a lie) and they lowered the additional cost to $5000.00! I still decided against it, and I managed to get out of it even though they said I couldn't.
My point is, that even if you decide you want the timeshare, try rescinding anyway and see if they give you a better offer. Chances are they will. Timeshares aren't for everyone, but if you do a lot of travel, I think they actually can be worth it. Its very discouraging reading about the experiences of others, however. I would never have considered anything like this if it weren't for my cousin who owns a timeshare and actually uses it and likes it. Finding positive reviews on Westgate Resorts is very difficult to find.
If you decide to go ahead and buy, play hardball. Think about how much use you'll get out of it and if it will save you money in the long run. Also consider what to do when the day comes that you get too old to travel, but still have to pay MF.