"First things first.. crew. About 10 people?" something like that, I could check the first chapter but eh
Key word "About" though. I'll be honest I'm not sure the crew will expand anymore. And on the other hand, if he meant 10 people excluding him, then that's 2 more, but I doubt Oda will confine himself to what he wrote more than 11 years ago.
I does seem kinda complete, doesn't it? We already have some sort of overlap with Franky/Usopp and Sanji/Brook (they did a good job at making Brook and Zoro fighting completely different), too.