Orange tips not required at all.
Have it in a proper case, gun cases can be had for cheap at Canadian Tire.
A lock is ideal IMO.
Unloaded is just a good idea for all the right reasons.
Back seat or trunk ideal of course, again for all the right common sense reasons.
Gas in the mags is fine, it's best to keep some in there in order to keep the seals in good order.
(There are a few threads on this.)