Pbloore,
I'm just running out of the office now, for a nice weekend down the country, so this will have to be short!
My point about eastbound departures form Weston, was that in general you'll have to go through Dublin airspace, and hence will need your flight plan.
As for the TRA, is will be there until 30-6-04. If you are comming after that, it won't be an issue.
The TRA goes up to 1700ft. If you are lucky you might get a clearance at 2000ft. You could also ask to be routed out at Kiliney, and follow the M50 motorway around the city, which is easy enough to find! (The TRA mainly covers the north of the city, not the south.)
Hope that helps!
dp