I think you are making a good decision to get the more capable system "up there", George. Just be sure that the drop from the cone to the barrel (and the barrel) are completely sealed and you'll be good to go. I have a fibre bin with a typical clamp-on top that came from Oneida. Zero air leaks with the bin/lid after many years of use. I also put a small window in the bin top so I can visually see how full it is and would do that again even if I had a sensor just for peace of mind.
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The most expensive tool is the one you buy "cheaply" and often...