This is an easy one. Get a Richey Outback. Well into the comfort zone but has going fast in its heart. Steel. Only a touch heavier than the svelte Swiss Cross V2 it shares some DNA with.
Not a gas pipe heavy pig like so many of the "touring" setups.
Gear it at 2x11, 46/30 front and 11-36 rear. GRX 600 with an aftermarket crank set basically. Sram Rival or Force 1x can shift 11-46, even if they say that 42 is the top. So 40x11-46 would also work but might leave you between gears depending on how sensitive to that kind of thing you are.
Start with slick or file tread 38-40mm tires, the bike can go more or less depending on how that first set of tires feels for you.
It'll weigh around 22lbs and cost around $3000.