Kia ora Isaac & Annie,
Love the product BTW! very exciting for you to have things take off. Some good advice from Vicky. I think you’re on the right track when you ask about “business processes” and “customer experience foundations”.
A few different ways of looking at this: The biggest pitfalls of scaling fast are loss of control of product quality and/or customer experience. I’d start by making sure you’ve got rock-solid closed-loops around these areas. By closed loop I mean you’re measuring and quickly able to make changes to fix/improve. So, tools like post-shipment follow-up and Net Promoter Score (NPS) are great ways of doing this.
I’d then take a look at the unit economics of what you’re doing. By this I mean the margin you earn from each product. Standard products, custom products. How will this change as you scale-up? If it’s not going down (perhaps because of outsourcing) then make sure you understand the impact of this. Assuming the plan is to manufacture locally (from imported componentry) then you may want to look at automating to maintain quality. Automating QA might be a good place to start (even now).
Lastly, if things really take off then you may want to look at product mix. Are low margin “difficult” products consuming resources that would be better applied to higher margin easier to manufacture ones? – that sort of things.
I hope this helps. Good luck with it!