I see this is your first post, what I'd suggest is that you get your pot still up and running. Learn it well, run it without a thumper until you're producing a product that's pleasing to you. Pot stills are pretty basic, but that's not to say that there isn't a considerable learning curve.
When you've achieved that level of skill, then move up to a thumper. You may like it, or you may prefer just the pot still. I've run a pot still dozens and dozens of times, and I've considered building a thumper. I have all of the components, but I'm content (for now) to run my current setup.
Life is hard, it's harder when you're stupid...