I was thinking that mixing units on the same range would be frowned upon. It could be fun to see who remembers that the front ones are not yds though.

Not sure it is worth mentioning the steel cost for anything except option 1. The other costs just in moving dirt would dominate unless you are attempting to distract with a relatively low number.

Even if it only results in the first option I support it, can add my name to it FWIW.