it's really easy to pass geo at higher. the short q's are 20% and the field trip is another 20% even if you didn't perfect them, it's easy enough to get enough marks from the essays to bet you over the 40% mark
cus passing higher is worth more points than doing well in ordinary.
i think its still worth doing the higher paper. even if you fail every section but 1, you'll more than likely have enough points to pass. that is if the short Qs go ok, which they should, they're generally easy.