I have issued this warning before, but watch for jagged edges on the roads. I got too close and ende

We haven't decided where we will fly into and we don't really mind. We were planning to drive around. But we were really hoping to visit Dublin, Belfast, Cliffs of Moher and Giant's Causeway. I've been reading a lot of forums saying it doesn't seem very doable so any advice about what to skip or ideas about where to start would be greatly appreciated.
Unless you're on a motorway, you'll average only about 40 mph in Ireland. That said, you will barely have time to see Dublin, Belfast, and Giant's Causeway in 5 or 6 days. Cliffs of Moher are 'way out of the way, time-wise. Please get a map of Ireland and a guidebook and plan carefully. If Cliffs of Moher are a "must-see" then you might want to fly into Shannon and see them along with many other interesting sites in that general area, but IMO Dublin, finding middle aged singles from canada to travel with Belfast, and Giant's Causeway would be too far afield from Shannon. I'm hoping the Ireland experts will add their recommendations.
Part of the beauty of Ireland is getting off the expressway and seeing the countryside. Roads are narrow, and with driving on the left side of road, and on the "passenger" side of the car itself, it's a vastly different experience.
You can do the Northern arc in 6 days, Fly into Shannon finding middle aged singles from canada to travel with and drive to Galway past the Cliffs day one. Day Two head for Sligo possibly some of the Connemara on route. Day Three Portrush finding middle aged singles from canada to travel with via Derry, Day Four Belfast via the Antrim Coast. Day 5/6 Dublin.
According to the driving time map in the back of Rick Steves' Ireland book, Belfast to Dublin would take 3.25 hours, Dublin to Cliffs of Moher 4.5 hours. Of course, that doesn't include stops for meals, gas, or sightseeing.
If you believe anything in that RS book then you believe anything. The times are wrong but on this occasion air on the top side. Be warned that RS advice on turning in wing mirrors and fixing "L" plates will get you in trouble with the Garda
Another thought -- even at slow 35-40 mph average speeds, it is possible to drive to all the sites you want to see. However, your 5-6 days will be mostly driving with little time to enjoy what you've driven to see. This kind of trip appeals to some, so if that's your cuppa, go for it.
Marirose the ambassador for Tourism NI. How many Tourists do you find wandering the streets of East Belfast?? If they flew the British flag every day from now to eternity there would still be mindless idiots wanting their hooded finding middle aged singles from canada to travel with image on National Telly and there are areas of any city anywhere in the world that a tourist would not go, want to go.
I'm planning on taking my first vacation to Ireland this September as well. I have no idea what I'll be doing yet. I only know that I'll be flying from San Francisco to Dublin. I hope you have a great time and I'm sure I'll be posting my own questions in the near future. In the meantime, I'll just check out the replies you're getting
I have issued this warning before, but watch for jagged edges on the roads. I got too close and ended up with a flat tire on the Burren. When you see those roadside castles and towers, give yourself the time to stop and check them out.