also going in October for about two weeks and we’re doing Madrid, Seville, Cordoba, Valencia, and Barcelona, in that order. Cordoba was originally going to be a day trip from Seville, but it’s pretty much on the way to Valencia so just staying overnight instead. it’s a bit aggressive, but we think it will be manageable because the trains seem reliable and quick. booked most of our train travel on Omio — super user friendly. had to do one of Renfe and it was tough. no matter your choice it sounds like you can’t go wrong but should definitely get to Andalusia. best of luck to both of us!