Using BobsGuide with trimys path has reduced my loss of troops (797 loss is higher than it needs to be).
Avoiding W6 is a piece of cake.. just use cavalry to attack the second bandit camp leader (labeled 12 on trimys map), the general will then be intercepted by all four sentry's. Just remember to retreat after your gen has destroyed the last sentry.
Link me your guide if you've uploaded.