I've had good luck with the cheap LED trailer lights, use heatshrink splices and you should have no issues. I tend to not own a boat long enough though to see how long they will actually last, 2-4 years is about average until this last boat, I think I'll keep her for a good while. I second the suggestion of using it a few times before deciding to customize it, maybe check out some other styles of boat to see what features you like on the water- if you have the ability to do so. should be a fun project, I've never been a fan of the square bow of johnboats but to each their own, lots of folks love em.