South Stand deffo. Don't forget your balaclava and scarf, it cold in there even in weather like todays!!
West Stand may be pretty well shaded especially towards the back of the stand. East Stand may be in sun but back few rows may be OK for you.
Oh aye, I almost forgot, if are going into the South Stand, phone in advance, they may be able to get some prawn pies in for you lot when you come down
.