Personally I would swop Bunratty for King Johns Castle- there is a great treasure hunt map that kids get, they have to go all around the castle trying to find things, there are people who will give hints, it is quite difficult, but kids love it and at the end they get a prize ( an eraser or pencil but apparently brilliant).
And Limerick has some really good restaurants and a beautiful walk along the shannon.
Rollerskating is my idea of hell on earth, it is dark inside, with flashing strobe lights and loud, loud disco music. Plus the added bonus of potential maiming from skates, yes of course kids love it, bring earplugs if you go.
Check the tides if you are going to Lahinch, if tide is in, no beach. For beach, I prefer Kilkee, there are more restaurants and a beautiful cliff walk, but it is out of your way.
I wouldn't go to seedsavers, too far out of your way, and unless there is a fete on, maybe not worth that much of a side trip.
If you haven't been to Aillwee before, try to go to the birds of prey show, and get the kids to sit near the front, they may be able to take part and hold one of the birds. The show is good.
Aillwee is quite far north, you could go to Turoe pet farm, if the kids like animals, it's a good one where you can actually feed them. There is also a playground and a very large bouncy castle indoors.
(am thinking roller-skating would be cool myself!)