Hello there!!!
P51 mustang ... You lucky lucky person having your old man sponsor you. Do not quote me on this but if you can afford it from what I have heard oxford is your only way to go. Having said that, I have recently read a couple of threads on who to choose and whether any school get preferable treatment in the job market and the answer was this: No - as long as you have got the qualifications its okay. ( I cant remember the name of the thread but it was by career girl). Somehow I find this hard to believe but that is what was said.
As regard to doing Modular or Intergrated I think I would choose Modular as I know at least for the oxford one you save a little bit of cash and you actually come out with more hours. I would recommend however that you get a class one medical before you even consider doing this as you will save yourself a lot of heartache.
I presume that you dont have a ppl yet. I would highly recommend you come out to South Africa to do this and your hour building. Its an ICAO PPL so you can do a JAA CPL on it. I have recently done my JAA PPL here in SA and unfortunately they went bankrupt and they were the only ones who offered JAA in the whole of africa - OOOPPPS. Because of this I had to do my SA PPL and found it a much more practicle course. Please no one shoot me. If you do decide on SA stay away from Global Flight Training based in Rand Airport (owners of bankrupt JAA school).
You will save yourself some bucks and will gain memorable experiences out here.
Well ... hope this helps