Hi ! I just looked at your own photographs of Arizona and New York during the 'black out' last August and they are exceptionally good.
http://www.saurabhwahi.com/ You really must do a 'photo' tour of Spain and get JER to make special room for some of your best. They are really professional. (Maybe you are a pro?)
Clearly there is already much information about Itineraries already contained within the
multimadrid site, but the first thing I would want to do, is find out whether there are any important FERIAS/festivals happening during your last days of March trip. As 'Holy Week' is starting 5th April, you will miss the religious processions and other events centred around Easter. You will also miss the 'Carnaval' season especially in Cadiz, that lasts until 29th February. (for info:
http://www.antonioburgos.com/enlaces/varios/enlaces_carnaval.html )
I am sure that you would find an Andalucian trip worth while for photo opportunites. But they are very much more colourful during the Feria days. I have visited India and know the music/dancing of India is echoed in the Flamenco of Jerez and other towns in the south. In fact after Seville, I would consider stopping off in Jerez for the flamenco atmosphere. The light is so much better (normally) in the south.
I just thought that you could fly from Seville to Barcelona (about 1 1/2 hours) which makes getting from one side of the country to the other so much FASTER ! I looked up
www.iberia.es and a one way ticket is very reasonable. (Euros 32??)
So maybe you should go south to Cordoba and Granada then Seville and if possible stop in Jerez, then fly to Barcelona !
Happy snapping.
Nige
PS Have a look at one of my pictures taken in Mumbai recently.
Mumbai taxi