Great and truly important that you are spending multiple days in one place.....otherwise this trip would be a hazy memory too. Remember that estimated driving times on apps for Ireland are WILDLY optimistic. I usually double them and cut back a bit.......So an estimated 2 hour drive is usually more like 3- 3 1/2 hours.
On your Aran Islands day if you can't get to, or can't leave your bags at the B&B ask at the Ferry office if you can leave them there or on the boat if the same one is coming back for you. We've done both and they are perfectly safe.
I guess my one overall comment would be ..... consider cutting back the stops even more and spend more time in a given area. For example in the Kenmare area you have given one day to the ROK. Yes it can be driven in one day. It will be hectic though giving you little time to pause. You could easily fill a week with things to do just in that area alone. Within an easy drive of Kenmare you have Killarney National Forest, Muckross House, Sneem, Staigue Ring Fort, Derrynane and a standing stone, wonderful Waterville, the view above Caherdaniel (believe me you want time to stop and savor that), real wild Ireland in the Skellig Ring, Portmagee and Skellig Michael and Valencia Island. There's lots more I haven't mentioned but on your itinerary you will be going past all those within half a day.
Anyway it's something to consider......what are the key things you want out of the trip. I (we) made the mistake of trying to cram too much into our trip to "see Ireland" and that trip is a hazy blur. When we cut that back....the stops...... and gave time for quiet, calm and little things the magic happened. We found moments that are more important than any of our sightseeing and time to interact with the people.
The sights are fun but even they need time. The utter joy of having an excited baker at a small cafe show you into her kitchen to show you her brown bread secrets just because you genuinely complimented her and didn't have to rush off to the next thing is priceless. To stop in Ballinskellig to look at beautiful horses and gave the farmer come by and he ask if you want to help feed them and ending up having tea with him at his home. Those are the golden memories....not racking up stops........allow time for them because even if you are as reserved as we are the genuine, warm, funny, self deprecating Irish people are just waiting to make your trip pure magic.
Consider it anyway.......have an awesome trip !!!!! Ireland is fantastic !
