cool. What if I carried a very light load and had packets sent to one of the hotels/motels I will visit along the route with top-ups of toiletries, kit etc?
If that's what you want to do... But seriously, you'll be going through small towns every day. Almost every small town has a store with some food (note I did NOT say groceries!) and basic toiletries. They'll be there when you get there, you don't have to guess when the post office will get the package there, or what you'll need, or whether the night clerk threw it out night before last. Save the mail for stuff that's hard to find.
If someone is going lite, then what would you say was the bare minimum kit you would need to take. First aid kit I guess, map, basic bike repair kit. Thanks a lot guys, your help is much appriciated.
My list would include map, first aid kit, spare tubes, patch kit, and pump (cables and a light spare tire, maybe; spare chain, no); sunscreen, enough energy bars to fake a meal, on and off bike clothes, rain jacket, tights or knee warmers, a fleece top (the cold weather stuff could be mailed across Kansas); billfold with ID, cash, credit card(s), and a debit card (to get more cash -- why pay the banks any extra?); water bottles, and a collapsible water jug for long, dry days. And something to carry all that in!
Then on days when you'll be in the middle of nowhere, stop by the store before you leave town, or the night before and get something for lunch.