Departing BFS on Sunday?
If you have the leg into BFS you will be kept at 4000 feet until passing EGAC (Belfast City) then stepped down to 3000 and finally 2800 or 2400 when establishing on finals for rwy 25 ILS, descent can come quite late so don't be caught out high and fast!!
Departing for Trans Atlantic you need to call the tower for your oceanic clearance well before start time. Rwy 25 is pretty much unrestricted performance and you will generally get a turn on track to your first waypoint westwards, no SID to bother about.
Have a good trip.