You are right, the pulley as primery drive is not strong enough, so the pulley and the middle main axle are connected to the PF-motor. The first drive axle can't, because there is no space, the motor sitting over there. But that's no problem, the first and the 3rd main axle are connected through the connecting rod.
On the 1189 is no need for an offset between pulley and main wheels, the axles are in the same line. But the SBB Ce 6/8 III has a similar construction like the EE 3/3. The axel of the pulley are one plate higher than the axles of the main wheels. The middle main axle is connected to the PF-motor, the rest is connected through the connection rods:
The wheels of the 1089 are from the Emerald, but the large BBB wheels are also good enough, see my other crocodiles.
Thank's for your compliments.