Wheels and tyres for 200km mountainous audax
I'm considering entering the (Australian) Alpine Classic in January next year. 200km, some 2000m+ of climbing. I use a Specialized Tricross Sport for virtually all my cycling, with 32 or 35mm tyres.
Two questions I have:
1) Given that most of the ride (timewise) will be spent climbing, is there much advantage to skinny (23mm) tyres? Or is the comfort of wider tyres more important?
2) Given that most of the ride is spent climbing, is it worth trying to get lighter wheels?
I think the most of the other people doing the ride will be using super lightweight road bikes, but I think I'm better off sticking to a comfortable bike I'm used to. Agreed?
(For a bit of context, I've done lots of cycle touring, but few days of more than 120km. Once did back-to-back 165km days, on borrowed road wheels and tyres, but that was pretty flat, in a peloton. Yes, I'm planning on training :))