Morning Nadz – happy new year. Sounds like you have a couple things in plan.
Getting started is tough, as you are trying to work through ‘likely demand’ before you order a container full – validating the market, so you really understand who will be interested, what they will pay, how etc – so ‘where you start’ is the key risk piece to get right – the best way to do this, is to speak with and engage in your market, check out this article, I hope it might help –
We talk about validation – to truly understand the needs of your target market, and also where if anywhere there is prescient pain – real pain that will cause your target to say ‘i want it’ – so I would first, interview some potential customers and see if you can learn about their needs to confirm or not whether they fit the profile of the likely purchaser – so you can reduce down the risk of buying product first.
These lean startup methodologies are also quite good – https://en.wikipedia.org/wiki/Lean_startup
All the best – Andy