In the end, it would have been cheaper and less time consuming had I just bought the Philips Hue strips.
I'm told there are cheaper equivalent solutions out there, but Sowilo's mostly turnkey solution was good enough for me. It helps keep S.A.D. at bay.
The key learning from my research was to buy commercial grade PSUs and LEDs from a proper retailer that supplies industry and over spec the PSUs - if you calculate your LEDs need 40w, get something like a 60w PSU. I don’t think it cost significantly more than if I purchased cheap no name Chinese stuff off Amazon.
As a side note, I didn’t go for the Hue strips because the LEDs would have been a lot less bright, the cut points were far more restrictive and it also would have worked out more expensive.
I bought two cheaper bulbs and won't buy any more of those because of this. So I guess if the reason is "money grab" i have to grudgingly admit it was successful.