This module arrangement looks to be correct. After the weight can perhaps be a difficulty, as well as launching and landing for each module.
In the other hand the pulleys driving the respective rope-drives have a common axis with their respective propellers, unlike the right-angle return pulley used by @Kitewinder. So the motion of the rope-drives is not aligned with wind force among other problems. As a result, the maintenance of the cable on its pulley seems random, as well as the power transmission ratio.