Lets use a weeknight in May as an example:
GF - garden view 41 pts
CBR - standard 20 pts
BWV preferred, BCV, WLV:
studio 13 pts
1 bedroom 28 pts
2 bedroom 34 pts
For GF, you would be using more points than a DVC 2 bedroom. CBR would be more than a studio but less than a 1 bedroom. So you have to decide if using them at a non-DVC is worth the extra points compared to a larger room at DVC.
Remember that if you make the reservation at a non-DVC, you can't change it back to a DVC if a DVC room becomes available or if you would have to cancel. The points would only be able to be used outside of DVC once you reserve them outside of DVC.