It looks like you have put a lot of thought and effort into this project and are well into it. My opinion, take it or leave it, is that this is a very dangerous, unforgiving set up. If it works, you have gained little. The video shows three men doing the work of one. If it fails, mechanically or by operator error, it may cost you, or someone else, dearly. You only have one body on this journey, treat it well...