Day time hiking in the Yorkshire Dales

I'm off on a charity walk of the Yorkshire 3 peaks in a few weeks and along with getting my snacks and hydration right, I'm also looking at the camera gear. At 25 miles (38km) and 1,600 metres (5,200ft) of ascent in 12 hours, this is going to be the lightest I've ever packed - I'm notorious in my family for lugging several bodies and 5-6 lenses around with me, mostly because with two young kids, there isn't too much walking going on.

I dislike standard zooms, but have picked up a Tamron 28-200 for this trip. So far I'm impressed with its performance. Not quite as wide as I'd like, but admirable performance throughout the zoom range. Given it'll be just past midsummer when we go, even across 12 hours, we'll be setting off several hours after sunrise and several hours before sunset, so low light performance handheld isn't a concern.

So my current quandary is actually about bodies - infrared converted A7R or standard body A7RIII (preferring the this over the A9 for increased resolution). I am incredibly tempted to go IR because the scenery is going to be stunning, but the light less so. But after a practice hike up Box Hill at the weekend, there's only so much candy floss trees and contrasty B&W processing one can deal with.

So my choice is from...

A7R Infrared converted (590nm or 720nm filter)
A7Riii
Tamron 28-200
Sony 16-35 f4

I'd love to take all four, but I did that for Box hill at the weekend and I really need to strip back. Could at a push take 3 of the 4.

So what would people recommend? And I'd be particularly keen to hear from anyone who has done the Yorkshire 3 peaks or other day time hill hiking.

I feel an ultra-wide is superfluous on hikes, I would just take the Tamron 28-200. 28mm is wide enough in the great outdoors and the 200mm is really nice for big landscapes.

If you like the converted body, bring it. But I wouldn't as you probably will not change lenses.

I can't help you on the Yorkshire 3-peaks.

Thanks for your thoughts. I took both cameras and both lenses on a practice hike up Old Winchester hill in Hampshire on Tuesday which didn't make anything clearer! I did swap out the 590nm filter for the 720nm on the A7R though and much prefer the more contrasty images. I think probably leaning towards the A7R. I tend to agree with you addy that ultra wide is superfluous on hikes, especially when the landscape is so open, though there do also seem to be a few little waterfalls when the 16-35 would be useful. Can't help but think I'm going to end up taking both