ups is your friend.
so is one day ship via amazon.
aka:spare parts.
as for clothing your ride is supposed to only be 9 days. ok think two extra.
plan on taking three days worth of clothing but for undies and socks. take 5 days. one pair of walking shoes (with great hiking style socks -counted as part of the 5), and one pair of flip-flops.
pending the where, what, and whom.
time of your and places to ride.
bring rain riding over gear.
I'm still unsure about bringing my rain gear. My overpants and the Connie's protection is pretty good until downpour status, and my jacket is the same for up to downpour status. Only thing better I've got is rain gear, but not sure I want to bring it.
cold weather:
neck down to the hands and feet. full water proof.
heated gear, jacket, gloves, socks. my legs do good with no heated pants.
if no heated gear think along the lines of layers.
baklava for the head, neck cozy, very thin hoodie, two layers over the chest/torso. long legged undies. thin first layer socks.
and first layer for the torso, pants, socks must be sweat wicking styles.
all this is to be counted in the total of the clothing.
I always ride with a couple of glove liners and a balaclava for cold weather. Got neck cozy but dont' like wearing it, too constricting for me. Legs and feet stay plenty warm with engine and connie protection so it's more torso and arms, thermals and a sweater should be good. Don't use heated gear.... yet.
hot riding:
do not let your skin be exposed to the wind. you will dry out way too fast.
so bring at min two gallons of water with you each day and drink most of it each day.
if your not P-ing, you had better be drinking water can be bought most days as needed.
----(if not already get a hydration back pack)----
avoid the premade "hikers" trash foods, as there is way too much salt in them. you will get sick off that much salt.
buy food along the way and make your own breakfast/lunch/dinner/snacks.
Hydration pack is a great idea. May rig that up somehow to wear under my riding jacket.
medical:
yes plan on needing it big time. better to over pack here.
wraps, aleve, band-aids, tape, wound cleaners, (try to never use tap water) disinfect (the red stuff).
bring cold packs, and heat packs. three each.
I've got a pretty good set up for first aid, cold packs and heat packs though might be good to add.
bring a bar of ivory soap, can be used on every part of the body including hair, and cleans your socks great.
riding gear:
needs to be said? two pairs of gloves. standard and wet/cold weather.
maybe a way to (temp) patch leather? spare face shield. great plastic face shield cleaners.
maintance:
chain lube. spare chain and fix it kit.
fix a flat. plugs / patch and way to refill tire to correct psi.
No chain on a Concours

Was going to get a couple travel containers though for oil and throw those on the bike for just in case-ies. Won't be carrying 2 quarts, or gallons of gas, or brake pads or cables, or fuel tank patch kit, or spare tires.
pending on the where
two quarts spare oil.
two extra gallons gas.
break pads. cables.
fuel tank patch kit.
spare tires ready for ups next day to you.
camp:
two man tent / tarp,
compact sleeping bag,
sleeping pad,
emg blanket.
compact cooking kit, pot-n-pans, plates (three), bowls (three), (knife fork spoon ), larger spoon spatula, etc for cooking with, stove, got fuel.
Nope
work your bike over full service, week before you leave do a couple long rides to check out everything is golden,
Changing tires, rotors and pads this week as prep on top of normal prep.
then have fun, take lots of photos to post here.