I recently bought a Bongo which had a full side conversion with a leisure battery system but it's pretty limited, has a single 12v cigarette lighter powers socket which the fridge plugs into and doesn't have any lighting. I've got this panel but it doesn't switch off the leisure battery and only provides an indication of charge levels

Ideally I'd have a panel to switch on and off things such as the water pump, fridge, lights and it would be pretty neat if I could also power the blinds via the leisure battery. I'm therefore looking for someone who can fit some LED lighting and install some form of control panel.
Anyone recommended and am I looking at an expensive piece of work?