I'm still very much learning my trade as an audax rider. Current bike is a steel genesis equilibrium with through axles and hydraulic disc brakes. I've fitted a set of hunt wheels with a dynamo. There are carbon forks, with a very long hole through them which has my front guard and front light bolted through it. I bought a 'budget' version light which had good reviews, but is all plastic construction. It has developed an annoying rattle. I've taped it with insulating tape, but next buy will probably be an all metal one, like the son edelux ii.
I've only realised from reading this that I'm unusual in my gearing. I have a semi-compact 52 / 36. It came initially with an 11-28 rear, but I bought a longer cage mech and swapped it for an 11-32. I never really feel the need for anything lower, though I've never considered it a possibility.