Hi Gavin
Thanks for the offer, but I think you should leave a great model like the 330 until you are ready to fly it yourself. If you can manage to fly the 737, then you should be able to fly the bigger airliner with practice, i.e use the 737 as a test plane, the windrider range of airliners, are smooth flying models.
I live 20mins from Newry, so we are neighbours, give me a call Gavin some time on 07745458755, and we can arrange a meeting.
As for local flying sites, there are none near you with a runway. I only know two sites with a tarmac runway, northdown club, and the Ulster club, the rest of the other clubs have grass runways, and you would need a tarmac runway for the 330 to obtain a safe flying speed for take off.