> Maybe all I really need from you guys is, do you think Moi3D is the right program for my propeller blade?
It's possible to do it, but MoI is not specifically designed for just doing propellers, it's more of a general purpose modeling tool and propellers are pretty advanced and difficult shapes to create so it's not like you will be able to just instantly jump in and finish a difficult and advanced model like that by pushing a few buttons... You'll have to spend some time just getting familiar with how to build models in general and probably you'll need to start out with doing more simple things to begin with rather than trying a difficult shape as your starting project.
Here are a few previous discussion threads which you may want to check out though:
