#2 looks like it is on the other side of the wheels. I don't know how you could get a floor jack in that location even if there was something to lift with. And I wouldn't put the jack stands there to support the vehicle since you would have to climb under way too far to be safe to put them under or take them off.
The pinch welds are pretty wide - maybe there is enough room to lift with the floor jack and then put the jack stand next to it before repeating at the next location.
Thanks, Jon