I am driving from texas to cali and back in early july. Im gonna be hitting places like Carlsbad, Death Valley, San Diego, Big Sur, Yosemite, Vegas. Im trying to decide what other essential pieces of gear I might need. I want to make sure I get some stunning shots in Yosemite especially. I figure I need to get some filters for my telephoto at least. What other lens would be beneficial to me? My current gear is in my sig.