I think I would go with POR that fits 5 as well. Better then having 2 rooms. Unless your kids take a long time in a bathroom then 2 bathrooms may be nice.

I so hope you can make it work. I LOVE DVC. We were going to buy but we live in the west coast and so we would only go maybe every 2 years. We also made a list of places we want to vacation and though we do Love WDW we also want to see other places so decided we will just pay to rent every time we go. I know that will get spendy over time BUT it allows us to be more flexible. So no DVC for us. And truthfully I am really happy we decided not to buy.

Another nice thing about DVC is at this time you can DDP without buying tickets through Disney. We did that last time and it was nice. We probably won't this time but it is a nice bonus.

If you go back to my trip report you can see pictures of SSR. So lovely