Did that route twice and yes it is good for the South West but found it very expensive. The last time I did that route before it ceased it cost if I remember correctly about £480 for car, caravan and two adults. The Cork bypass was opened some time ago so travelling from Rosslaire to KIllarney with 'van takes between 4/5 hours driving leisurely 40/45mph. Love it when it's very rough the worst I have been in is a force twelve, wonderful, the only problem was that the greatest majority of people were sick as a dog and the stench form their sick was awful you couldn't open the toilet door I won't tell you what it was like in there. Love the drive so it's Rosslaire for me every time.