There are very few villas at VGF - I think there are only around 20 studios. Are you using your own points or trying to rent? The studios book out very, very fast - it would be next to impossible to get multiple of them for a trip. You might have better luck reserving two dedicated 2 bedroom villas. They seem to book last because the points needed for booking them are so high. If I were trying to rent points and reserve multiple villas, I would have a back up plan if VGF is already full.
With that mix of guests, I would get 2 two bedroom villas. We just spent 5 nights in a 2 bedroom at VGF and I had to use 340 points. That times two would get really expensive, really fast to rent points.