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Hi Josh
To do this properly (and the links you've posted would certainly do what you want well) will add up cost-wise.
If you're still learning astrophotography, why not take it easy, and just make some passive dew covers from foam matting and velcro. A wetsuit fabric beer stubbie cooler makes a great dew cover for a 50mm finder.
I only ever use passive control on my 50mm finder/guider and 8" Newt in Bris burbs and surrounding dark sky sites, and with our pretty mild weather it has been fine. The 80mm refractor is likely to need something having said that, BUT you may well find you can still guide ok with just a passive cover on it initially while you're learning the ropes.
p.s. I have a Thousand Oaks 4 channel controller I use with an 80mm refractor with single dew strap and works great. No experience with Kendrick controllers. Would be worth searching past posts here for what people prefer with regards to reliability, connectors, etc too.
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