If you want navigation lights then go for the Cree stand-alone type, they already have a built in battery and are probably the brightest you can buy.
The only problem I think you might have is telling the orientation when I gets a certain distance, you might be better off with white.
There are threads on here showing them and there is also a discount code available on here.
I would post links but typing this on the iPad so I don’t have a clue how from here 
