There is no question that you can get a great
DVC villa more economically by renting a reservation (points are of no value except to a DVC member who makes the reservation) from a DVC member. Tickets won't be much different wherever you purchase them (direct from Disney or from a ticket broker).
Once you recognize the economics and recognize the differences (no daily housekeeping, less generous cancellation policy, no control over the details of the reservation until arrival, etc.) you can make an informed decision about which will be more appealing to you.
I'd read thru the suggestions in the links provided and also those at the top of the DVC Rent/Trade Board and educate yourself on what the package would cost thru Disney directly and what cost difference you would find from a DVC member. If you have any questions, feel free to ask here on the DVC Boards as the Rent/Trade is not a discussion board.
Good luck with your decision.