and for a moment there I thought you were looking for photographers. :sweat:
Read up on Dry cabinets (google or the search button)
Wide lenses? Read up here on the different ones such as 12-24 Nikon, 12-24 Tokina, 10-22, etc...
Camera carrier, I assume you mean bag, there are so many designs and brands. Which do you prefer? Shoulder bags, backpacks? or?