Hi Good Soldier. I actually had a RAILROAD SPIKE in my guitar at the 5th fret of the 5th string so I can just tune the High Five strung to a D, "capo" it at the 5th fret and get a high G that way. Make sense? That's what banjo players do, but it's great to know that a .07 E string goes up to a G. You can also tune it to F# and play in Open D.
Loads of things to experiment with clawhammer guitar.