Dang it if I didn't forget ordering some 303 aerospace protectant as well. Can't even keep up with my own addiction. All excellent recommendations, but once you begin you soon realize you have committed your credit card number to memory.... Hothead headliners are next...I would also look into the Bolt hood lock. It keys to your engine key (one less key to carry) and keeps people from easily mess with your engine If you left your hood stock . I just installed mine this weekend (super easy).
for cleaning and upkeep: 303 makes some awesome cleaning and sealing products that protect from the damaging rays of the sun, especially if you live in a warmer climate and will go topless a lot. I live in southern FL and the sun is unrelenting. I had all of the windows tinted with a ceramic tint keeps interior cooler and blocks a majority of the UV rays. Have fun and enjoy your new ride!