I'll add my 2p worth:
Topeak Hexus II, Topeak Rocket Micro Pump and a Parktool Patch Kit will be enough to survive the vast majority of mechanicals and several punctures. That is provided your bike and tyres are already sound and don't have any strange
fittings or bolts requiring a spanner.
Added luxuries include an innertube, Presta to Schrader valve adapter for putting higher pressure in when you pass a petrol station, some duct tape wrapped around the pump for tyre repairs, one sturdy tire lever, a few extra chain links and a decent spoke key with a few spare spokes taped to the chainstay.
As for the wallet, leave it behind in favor of a couple of £10 notes and credit card. Phone is a personal choice - for the past couple of years I leave mine behind which heralds back to the unplugged time of the early 90s. OS map will fold in the back pocket fine. Keys you can always put under the plant pot on the way out, or just take the few you actually need. A banana, some jelly beans, 750ml bottle and you are good to go.
I do 150 Km rides mixed on-road and off-road on my own through some pretty remote parts of Sweden with the above; I still favor paper maps instead of GPS too BTW, but don't know why you would need it when there is probably a Clubrun Leader who knows the way. I never use a bag of any sort - road or XC, all in the jersey pockets easily.
For the fig rolls, simply stuff the whole packet in your mouth prior to the ride - the sugar high will leave your new cycling buddies fighting for your wheel at every town sign sprint and prime.
Sound advice there, I am sure I am worrying for nothing. All will be fine I am sure
Getting excited now
Kelly.....Body by Kona.............Soul by Satan !