Pull plate and pump. Will make it easier, just more work, unless you have a deep long socket that will fit over the steering cable locknut. Someone use to make one, or you can make one from PVC by heating up and slipping over the nut while still warm, then let cool. I have used channel locks and flat head screwdriver in a pinch......
Run cable in from the pump side, then feed up the steering tube. Same for the Throttle and Start Stop. send the throttle cable up with the Steering cable, tape together. Not sure how the Blowsion pole works with the breathing tubes, Did you order the bracket also?
Search Youtube, prob a video on that pole. But it is pretty much common sense.