To Build or to Buy
The next decision you have to make is: Build or Buy. Although buying a still is okay, you will gain a much better understanding of how a still functions and what makes it work if you build your own. However, some people may lack the skills, time, resources, or whatever to fabricate their own, and that is very understandable — and I respect that.
I'll keep this short: if you buy, you should seriously consider one of the Essential Extractor models/types with the combination pot/reflux column.