So picked up on eBay a couple of little kits which are designed to give various options for 8 LEDs. Have played around with them and there are some options within them that look to b great for the spinning lights in the nacelles.
This is the sequence I’m likely to use and I’ve tweaked up the speed to make it quite fast.
Conveniently the circuit board fits neatly just behind the bussard collector. Just need to sort out the light blocking now.