You didn't say where you're staying, or what season.
But if you check the
point charts, you'll see that in many cases a Grand Villa at OKW is fewer points than a 2-B/R plus a Studio at some of the other resorts for weekdays, or just slightly more for weekends. A Grand Villa would be perfect for your size group.
Of course it may be too late to book one, but you might consider it. This only works for OKW. Getting a GV at SSR or BWV will be considerably more points.
Points for an OKW Grand Villa, Weekday/Weekend for the 5 seasons are:
36/88 - 38/91 - 45/107 - 51/123 - 66/162
Getting a 2-B/R plus getting a Studio is this many points for all the resorts:
BCV, VWL, BWV Pref: 42/84 - 44/84 - 47/101 - 54/107 - 69/149
SSR: 38/74 - 40/76 - 43/91 - 49/97 - 62/134
BWV Std: 33/71 - 33/79 - 41/94 - 43/101 - 60/141
OKW: 30/74 - 32/77 - 37/88 - 41/100 - 56/136
Reading the chart you'll see that in Adventure season a GV at OKW would be 36 pts/night Sun-Thurs, while getting a 2-B/R plus an extra Studio at BCV would be 42 pts/night Sun-Thurs.
Just something to consider.