I played twelve games in 13 days in 1997 and even thinking about the trip make me want to return.
Played South west first and loved Lahinch, Tralee, Waterville and to a much lesser degree, Killarney (beautiful scenery, but "park" courses were not the reason I was there.) Also played Dingle, but that was only so-so and wouldn't go back to play it again. All the others would see me back in a minute.
Couldn't get a hit at Ballybunion, so don't bother reminding me.
Up north played RCD, Portrush and POrtstewart. As a treble, these would make the trip worth making.
Castlerock and Ballycastle (if my memory serves me) were plain and your time would be much better spent doubling up at the first three.
My advice would be to cover Lahinch, B-bunion Tralee and Waterville in the south OR Portstewart, RCD and R portrush up north. Just play them MULTIPLE TIMES...
Drving is a joy and more enjoyable than just about anywhere I've been and make good use of teh long days where possible