Ah, so much to tell you about Ireland, so little time, so off topic.
If you are fairly limited on time, you might consider leaving Blarney off your itinerary. It's more of a tourist trap than something you'll fondly remember later. The time could be better spent elsewhere.
Have you been informed about the car situation? They are small and the roads are usually narrow especially in the mountains (Ring of Kerry, Dingle Penin.) and in The Burren. If you don't absolutely need something, don't take it with you. The car trunks are small. Our last trip we decided to buy clothes along the way instead of taking a bunch, even did some laundry in Tralee.
Don't worry too much about finding a B&B wherever you end up at night. There's hundreds of them. If one is full, they will usually tell you where a vacancy might be nearby. "Ah foolks, tarribly sarry, but we're full up. Let me ring up Mary O'Brien, she might have a room." She usually did - seems every lady is named Mary O'Brien!
The Irish are the best bunch of people on the face of the earth.
I've to comment on winstonsmith's comment on Galway: "If you ever get to Galway, go stand out by the river ... watch for the heart-wrenchingly beautiful women going by." Or go to the park, or go to the Skiff Bar, or ...
He's right, gotta be something in the sea air there.
Actually to go back on-topic for a change, someone above mentioned Portobello Road in London. There are lots and lots of antique shops there where you can find all sorts of English wartime memorabilia. I even found some musket parts and old powder flasks, etc. If you can get there on a Saturday, they have a regular flea market type of setup where the road is closed to general traffic and the dealers set up their goods on the street. If you plan to be in London for an extended time, Portobello is the best place in London to buy produce, fruits, meats, cheese, etc. The goods are all first rate and are sold for very reasonable prices.