I've been considering buying, and I've done lots of research with the help of the disboard here.
I think since you've never been to Disney that it would be fun and very cost effective to rent points at $10 a point and stay in studio units during Sun-'thurs during value season. That's $80 a night, cheaper than you could rent any studio unit. (8 points is for OKW...I guess the other resorts might be closer to $100 or even $120 a night in points.)
Take advantage of a tour of Saratoga Springs through Disney. And make sure you also take the time to enjoy all that DisWorld has to offer you and the kids.
And THEN, if you decide to buy...you can make an informed decision. The cost of the rental will be no more really, than the cost of maintenance and closing costs should you have bought before renting.
As to the risks...most people here on the Disboard are so open and trustworthy. If you pay by Paypal and put it on your credit card through Pay pal...it seems that you would be adequately protected.
The difference that I 've noted between Disney and other timeshares are in the resale value remaining very high at Disney. You could buy a Westgate that is selling through Westgate at $20,000 for only $2000!!!!!!. But Disney resales aren't all that much savings over Disney proper when you factor in the extra 10 years...unless you are talking about buying a LOT of points.
I'm looking for 100 -150 points and that will be plenty for my use. I may save $1000 on a resale but give up the 10 extra years and financing. The decision of whether it is best for me...or for you...is completely personal. But all things being equal....if you can SEE all the home resorts before you buy, it will inspire confidence in your decision.
Hope that helps your perspective some!
Colorado Belle