I'm rafing the Rogue River this August and considering taking my 5DMII, 24-105L, and 70-200L.The LowePro DryZone 100 Iscarfedoffebay for $100 seems to be waterproof enough, but I think I needbetter protection from rough handling. Anyone care to recommend a Pelican model just big enough for those three items? I'm sure I'll have limited space in the raft. Thanks.