Exactly; plus I think it'd take more than a few weeks.
Anyway, I'm done with almost all of them, HenSquir. It took less time than I thought. The poster names for Nami and Sanji were not revealed, so I had to just put their first names in.
These aren't the best, but I tried my best to make them look as realistic as I could; according to how Oda draws them.
Nami.
!
Sogeking.
!
Sanji.
!
Robin.
!
Luffy.
!
Chopper.
! 
I know, you're asking "Where's Zoro and Franky?"
Along with Chopper and Robin, his bounty poster picture was considerably covered up, and I'm currently having a hard time duplicating Zoro's hair. So, you'll have to wait a bit more.
However, I don't have a colored version of Franky's poster, so someone'll have to do that till I can make it.
Hopefully these are good enough; and when you print them out, I suggest you cut along the 'ragged' poster lines. 