Ireland works on 240V-50Hz you'd probably be better of buying there
I'd agree that you might want to wait until you are there. Also, turntables don't always travel well, even if you have original packaging. I'd be worried about sending a TT overseas.
Pink Fish Media seems to be a pretty active forum in the UK. You might look for used gear there. Art of Sound is smaller, but another UK site worth looking at the classifieds of.
If it's Dublin you're headed to there are a few dealers of quality "kit" and I agree your best bet will be to buy a system once there. Plus with the 240/50 AC you'll want components with transformers that were designed for this voltage/frequency. But let us know how it turns out and enjoy Ireland, a wonderful place.