Personal choice, but I don't like the combined switch & fuse panels. I prefer a fusebox inside the console (dry) and a separate bank of switches mounted on the console face. My choice would be a six way Blue Sea fusebox with negative bus and Carling rocker switches, mounted in a small panel. All these are available from www.asap-supplies.com
For the anchor locker, you could use a small, battery powered LED light - saves running a separate cable and won't kill the battery if/when you leave it switched on
You can get self adhesive ones for a pound or two. I've got one inside the console and it does a fine job.
You should have your all round white light on the boat's centreline and 1m above the sidelights, which is difficult to achieve without an A-Frame.
Use an isolator, as jky recommended - best to also have this inside the console, 'cos they don't like getting wet.