Of course you are not nuts. As long as you have appropriate protection
whether it be breakers or fuses is fine. I do not quite understand your
comments though. if you can fit appropriate sized fuses in the
appropriate places, you could have just as easily used breakers. they
serve the same purpose. I just think breakers are so much easier and
even withstanding the fact they may be able to be bumped on or off i
can see a situation where your nav lights or maybe radar develops a
temporary overload etc where it would be much easier to reset a breaker
rather than discover you do not have a replacement fuse.