Na will look good. No one has used Mexico arches on 10s! He can always chope them around using fibreglass to make them look right!
I always thought those wheels look a bit like the Rotiform wheels (google it) but then for our little cars. I would not go for mexico arches though because they will look overarched on 10x7, they only look good on 13x7 and 13x8 in my opinion.
Sportspack arches will look best with 10x7.
this is my mates on 10x6 with inch spacers