Do you have the latest SF where the doors are part of the tarp? Or is this an old model that came with separate doors?
Assuming it is the newer model.... Here are some things I would put in the equation...
- If you decided to use a bridge hammock in the future, the Velcro would be useless.
- resale - would others want this if you ever sold it
- not sure what functionality you are gaining that tarp lines wouldn't give you