I don't see anything wrong with your choices there apart from the spark plug lead set. Does the VVTi have leads? I know the pre-VVTi TT doesn't and as far as I was aware the only MKIV's with spark plug leads were the NA's.
As for the oils they are easily changed by any competent garage\mechanic.
As for your spark plugs you could go with either, but i'd say if you have heat range 6 and have no issues, stick with them.
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