"Smidge" works well to keep the blighters away! Just testing it out on Orkney at the moment...our first midge evening!
Everyone has covered everything. Fuel is no problem...I cope with a 200 mile range on the GS with no problems so a Morgan should be fine. For security there is a stainless lockable mesh cover you can get to lock over soft baggage in various sizes but as I'm not home I can't tell you who makes it! It's great for security though.
One last bit of advice...put your foot down going though Benbecula!
