As there are 5 of us, time is somewhat limited, and we want to cycle the length of the trace, here is what we'll do:
Ship bikes to Trippe's Western Auto in Natchez. Fly to Jackson, get a van shuttle from Delta Bus Lines to Natchez, assemble bikes, and ride a half mile or so to start The Trace.
We'll bike right to the REI in Brentwood, (Nashville), and have the bikes shipped home.
We'll then fly home from Nashville.
I'll let you know how this works out.