You don't need chamois cream. You don't need more than one pair of shoes. If you're a clipless user, mountain bike shoes will suffice. You don't need more than one type of detergent, bar soap will work for your body, cookware, and clothing. I can vouch for the GSI Soloist, it's a great pot. You don't need a soft sided cooler. You need a seperate set of sleeping clothes, such as a shirt and a pair of boxers. You need some type of off bike clothing, normally a regular pair of shorts. You can use some beach shorts for this purpose and have them double as swimming trunks. You need to have enough socks so you can have a clean pair each day.
Regarding shoes: All of my tours last summer were using SPD sandals. So no need for socks, very walkable, and perfectly usable in dry or wet weather.