Yes, you can do all the things you mentioned above. FP times and ADR times are not linked at all. If the reservations were made with you as the primary contact, then you can make another reservation within about 1 hour and 10 minutes of an existing reservation. I used to think it was 1 hour, but I was having issues earlier this year with a 1 hour and 5 min difference but not a 1 hour and 10 min difference. If the original primary contact on the reservation was another member of your party, then you can make a reservation with yourself as the primary on the second and the time limit doesn't apply.