There are several existing figures that could be converted to do what you want with the US sailor, I think. Why not try a conversion? You could use the WW2 Kriegsmarine Verlinden figure possibly. I used it to convert to a WWI sailor infantryman based in Belgium. I don't care much for the face of that figure, but that's changeable.
If you want to wait a bit, Alex Lopez is working on a US sailor figure that I think you'd find just terrific. I'm not sure how much more I'm supposed to say about that - maybe I'd better leave him to announce it. Alex is a very talented sculptor!
Or see my vBench for the WWI sailor-bugler. I'm not under any illusions about my talent (or absence thereof....) as a sculptor, but, heck, if I can do it - - so can you. I'm just a novice, but you got to start somewhere....
I really like the idea of the Shakespeare characters! That's got some real possibilities! Marc Antony, Julius Caesar, the 3 witches from MacBeth, cool concept!!
all the best,
Dan