hi Lph,

130km with 1500m climb. figuring half of it is downhill so that leaves you with about 65km of climb. And just because round it down to 1500m of climb in 50km instead of 65km then its about 1.5km/50km is 3% grade. Maybe your worst climb is 6%??

From reading your posts, it sounds like you are in pretty good shape so I wouldn't worry too much. I would definitly throw "c" then take a day off from riding. And during the week, I would add some hill repeats tacking 2-3hour hill climb once a week. You have a good enough base. You just need to condition yourself mentally.

Much of the hill climbs are mental not physical so you need to condition your mind to the hill grind.

Ddon't forget the rest day!!
and wish you lots of fun on your ride
Smilingcat