Walkthroughs for custom maps.

With the starting bonus of Bulls and Lime, you can try fighting a week earlier. But within this concept, you need to capture Boots and break through the Blue Garrison a week earlier as well. In both cases, the battles are quite tough, and there were significant losses. Here, you'll have to conduct these battles with the same army (+starting Bulls), but with lower attack power.

The losses will be noticeably higher, but by how much? - yes, it's hard to estimate.
Bulls are not as bad a bonus as Peppers, but by the time you capture Boots and the Garrison, it's no longer better than attack. And further on, a 1-week increase is still weak compared to stats.