The problem with BRS as I see it, is that it's a one way decision. That is, once you have decided to deploy the chute that's it. There is no ability to say 'oops', dump the chute, I've got a better idea.
So, once the chute is deployed it better work! No partial deployment. No tearing canopies, no ripping the mountings out of the plane, no snapping belts etc etc.
The other thing to consider is when are you likely to deploy the chute? I doubt if it would be in nice gentle straight and level flight at 100kt. By the time you made the decision and then deployed, it would be more like an off the clock spiral dive. So in my mind option 3 is the only one worth considering, and yeah, the 544kg limit is a pain in the backside.
