Pat, That Gary does always have something up his sleeve. I call him the spoon, cuz he is always stirring something up. What a piece of osage that is eh? about as clean as you can find.
Tom, My Grandpa Al from Canada would grab the handle area and do the heavy lifting(he is kinda short but very stout),A custome made stringer was used. Matt W would run one end of the string and I would do the other. Maybe one or two extra guys tossed in there for safe measure. The length of the bow is really the killer or that 120#'s would be no problem to push pull.
So to answer you question, 3(or 5).