A few thoughts.
For "fun" have you looked at the
point charts at OKW 3BR? Although not needed for a trip your size you may be shocked that a 3BR at OKW will be cheaper than a 2BR at some of the more expensive
point chart resorts (VGC included). A 3BR at SSR standard view may be similar to a 2BR at a higher point chart resort too.
I'd give a vote for AKV-Kidani side for the extra bathroom. It's also an awesome resort in total but you do have to deal with the busses.
We had a great time at BWV in a 2BR garden view room and it's a solid location. Only two bathrooms and it is a lock off but should still have no issues sleeping your family.
We love CCV but usually we'll only have 4 of us in our 2BR if we go there. It's also the closest "twin" to VGC at WDW so you should see it for that. AKV is also same designer too.... The CCV rooms are beautiful but a bit on the small side. You may want to consider visiting the 2BR at BRV for a bit more sleeping spaces if you get the lock off.
We personally are giving a 2BR at OKW a go for the first time in a few weeks but again only 4 of us and we do rent a car.