What would you anyone guestimate for a standard room/studio (or preferred view, but not club or value), for a week, with food, hoppers, etc. About $2k-$3k per person?
With DVC, just like regular resort rooms, it depends on the season and the resort. DVC "seasons" do not particularly coincide with the hotel room seasons. September is the least expensive time of year but early May and early December are also times when the required number of points is low.
As far as resorts are concerned, if you exclude value studios at AKV and standard view studios at BWV, the most reasonable studios point-wise would be at the older DVC resorts: OKW, BWV, BCV and BRV. CCV has pretty much the same points chart as BRV and can also be reasonably priced. If you're renting from an agency, then OKW and BRV are your best bets because agencies charge less $/pt for those resorts and they are more likely to be available than BWV or BCV. One week in an OKW studio, mid-September would run about $1420 at a rental agency.
I use the dining plan as a measurement for food costs. I don't buy it and don't particularly recommend it but it can give you a ceiling for your budget. Currently, it's $94+ per night for adults and ~$30 per night for children under 10 for the regular
DDP. It costs $57 per night per adult and ~$24 per night per child for the quick service plan. DVC does not get a discount on the dining plan. For a family of 4, 2 adults, 2 children under 10 that would run $1750 for the DDP and $1134 for the QSDP. I find that we can eat on our own for less, especially since there's a kitchenette in the studios and a full kitchen in the 1BR and 2BR villas.
So that's $2555- $3200 right there, depending on dining plan chosen, and the family hasn't even purchased tickets. Looking at undercovertourist.com for pricing, it appears that 7 day base tickets for that family during the same week in September would cost $2312. Hoppers add on about $300 more.
You're right at $5170 -$5800 and change for a family of 4 for a week during the cheapest season in the cheapest DVC rental, tickets and food included.
It could be done cheaper with fewer park days, no hopping and not eating Disney food (order groceries, pack lunches, microwave dinners in the room, etc) but that's a ballpark figure for the cheapest time to visit and what you might consider the floor for a weeklong stay for a family of 4.