I was planning to try to wash them 2-3 times each.

Can you throw all the coloured ones in togethere - have you any issues with any of them re coulourfast-ness??
ooh, i was gonna ask that too - had all these thoughts when i was driving and they disappeared when i went to type

another one - i forgot to grab sensitive skin detergent today - is it ok for all the prewashing to be done either with water alone, or with normal washing powder (cept the last one of course - i'll send DH shopping on Wednesday for that...)