OK, so, yes, I guess a golf bag can fit in the frunk IF you take out the driver and place it beside the bag (I just tested it). The 3 wood (with cover) is a big snug in the bag, but it will work if you are careful.
And it looks like the falcon wing doors will open up higher if the garage doors are closed. I opened the FWDs with the garage door closed and then opened the garage door. Interestingly, the car beeped at me just before the garage door was about to hit the FWD (I stopped the garage door before that happened and right after the beep). Hard to see angles in this picture but I stopped the garage door about 5 inches before that right angle aluminum piece would have hit the FWD.
And here's an overview shot. Even If the doors didn't have that leading angle bar, I believe the door's horizontal aluminum braces would have hit the FWDs as well.
This behavior is no different than what happens when you open a normal liftgate. You gotta be careful. At least the car beeps telling you the garage door is about to collide...
Now Tesla (and other manufacturers) DO have a liftgate height adjustment (which I have to use for when the garage doors are open) to restrict the opening height of the liftgate. In an ideal world, there would be a FWD opening height adjustment and a liftgate height adjustment that were tied to GPS, so at home, it wouldn't open either too high.
As a sidenote, a GPS aware rear liftgate max. height adjustment would be really nice. The height I have to restrict it to is a tad too short for my head, as in I'm in danger of banging my head against it when I'm loading stuff into it. It is what it is in the garage, but outdoors in a shopping parking lot, it would be nice if the liftgate would open all the way.