Hi guys. This would be my first travel to Beijing. Please advice me on what to bring on my list: Canon XSi gripped, Tamron 17-50, Tamron 90mm macro, Tokina 11-16 UWA, Tokina 50-135, Canon 50mm 1.8 and Canon 85mm 1.8, batteries, cables, and charger on a Lowepro Flipside 400AW. A regular tripod attached also to my bag. Ohhh its a bit heavy guys.. not included will be water bottles ion each side. Any thoughts guys would be appreciated. Thank you