Have a look and read here
http://www.sea-angling-ireland.org/shor ... yo%202.htm
After that drop me a PM, its a bit early for some species but there are places where you will do fine, with a half decent few days weather.
The best shop to stop in is probably islands sports in castlebar. From Dublin turn left at the first roundabout and its in the retail centre on the left, at the back, behind a motor factors. Massive place, boats inside!
If you want ot bring bait with you, bring ragworm. None on the west coast and so long as it is in good condition it will work wonders on either beaches or rock marks. Are you fit? Would you be up to walking for 10 15 minutes over boggy ground and scrambling around a bit? RSVP.
Cheers