That's sort of the plan, KP, but I won't have that much latitude.
My missus and I have friends in Wicklow and like my missus, the female friend rides horses, so it's a great chance for me to get some golf in with my mate while she logs some horseback hours, and blag some brownie points for taking her away for a weekend.
Of course I wouldn't fly all that way to play Druids Glen and Heath, so before my missus flies over for the weekend, I plan to spend some time (I was thinking one day, but two is looking more likely now...) checking out Northern Ireland.
Taking your suggestion to a workable extent, I'm thinking I could fly to Derry, play Castlerock/Portstewart and Portrush in a day, stay in Portrush and drive in the morning to RCD, play there and comfortably be at Dublin airport to pick the Good Lady up from an after work Friday evening flight ahead of a weekend in Wicklow.
I could try to fit one or two more courses in, but where do you stop?
NOTE - Just in case anyone is reading the above and thinking "well then why the f**k did you ask about playing three courses around Portrush?", the initital plan was a localised visit only, before I saw how short the drive was from up there to Dublin/Wicklow and decided I could work it in with a visit to my mate.