A question:
Are you still below any significant scale thresholds and are there any you dread crossing?
I ask this because I tend to find things are simple until they are not. e.g. it's easy to write an e-commerce platform until you have to deal with shipping, duty, tax, tax on shipping, etc., for multiple countries.
There are scale thresholds I am aware of in hardware that I have not yet run up against. For example I am using Free software, but I am aware that with commercial CAD you can cross over price tier thresholds. Or for another example there are sales quantities where with electronics you might end up needing compliance testing, consumer safety testing etc.
Which ones haven't you crossed yet that you expect to have to navigate?
Having too many orders is a good problem to have (unless it gets cloned). Worst case, you pay an external contractor to sort compliance/fulfillment/whatever.
I make a physical product, akin to a guitar pedal. Possibly the most scary threshold would be if I'm successful enough that I need to quit my day job, but not successful enough for the business to support my family. That's kind of a no mans land where I don't want to be.
Another similar threshold would be having to hire people, which changes the complexity of the business in a variety of ways.