i suppose it's a novel way of seeing the country.i met an english man who cycled wright around the coast in 7 days ,but he had his wife and family with him for support ,he was nearing his journey end when i met him he said he enjoyed every pedal stroke.if you check out boards.ie you should get loads of good info on your plans( cycling forum.)
expect to pay around 35 euro a night for b/b.hope this is some help.