We are a family of 3, and we love being DVC members. We are "older" parents of an almost 5 yo, and we love having the extra space and luxury amenities. We have done value and moderate resorts, and it is not nearly as relaxing as a 1BR villa. Of course, the 1BR's have King beds in the BR, so we end up sharing with the boy for the week. The only way around this would be to put him on the sofa couch or chair, get a 2BR (which would be a little pricey), or get a Studio, which has a queen and queen sleeper sofa. Once he is older, he will move to one of the other beds in the 1BR.
You should study the points chart closely to see how many points you need for the type of room you want during the year. Once you figure that out, you should add a few points to build in a cushion for the possible point re-allocations that occur from time to time.
Resale could save you thousands. AKV direct current offers:
$120 base price less $6 promotional discount; 100-159 points
$120 base price less $8 promotional discount; 160-219 points
$120 base price less $16 promotional discount; 220-319 points
AKV resales are going for the mid-70's to low 80's. As noted by others, you can no longer use resale for
DCL, but it is probably not a wise use of points anyway. Remember, it can take up to 8 weeks to complete a resale transaction, so time your offer accordingly if you know when you want to use your points for the first time.
You will have a chance to meet with DVC representatives on your cruise. Study these pages before your trip and be armed with questions. Buy where you want to stay. You get the 11 month booking advantage with your home resort, which may be critical if you want to take your little one during Christmas or Spring Break. Some of the resale prices per point are very enticing as certain resorts, but if it is not a place where you see yourself staying most of the time, it may not be worth the savings.
Good luck with your decision!
