We think that insulating your van’s floor is worth the minimal extra cost it adds to your build. The best floor insulation is ½” XPS foam board due to its high r-value per inch and its compressive strength. But a layer of Reflectix will add some insulation while taking away less headspace. We used Reflectix, but if we did it again we’d go with the foam board.
One of the things that draws me to the online woodworking community is amount of passion people show are willing to share. Your shop build is a fine example of your willingness to let us in on your passion. You could have said “I’ll be back in a few months when its done” and most of us would have waited but instead you turned it in to a summer of updates and dream shop discussion. Thanks!
Gutting: We actually took on a pretty big project when we bought our van because it came with a preinstalled wheelchair lift that we had to remove. Unbolting all the parts took both of us working on it for a full day, and it wasn't the most glamorous job. The good part was that we were able to sell the lift and the reclining bench seat for a combined total of $260. If there's anything to remove from your van, do this first.
Sadly, that’s most of my power tools and shop accessories, but it’s a growing collection. Compared to all the money I’ve wasted on small electronics and computer junk in the past, I’d say this has been, and will continue to be, a much better investment. I just wish I had come to that realization back in college, when I was probably spending $500-$1000+ a year upgrading my computer.
They say nobody ever started a small business out of a love for numbers, but if you really want to stay the course, you’re going to want to fall in love fast. It’s only by keeping detailed accounts and tracking your business’ numbers over time, (net sales, cost of goods sold, and average transaction size) that you’ll start to gather the actionable insights you need to make intelligent business decisions.