Interesting goal, and I have a few climbs up here in the Lakes that I would love to clean as well.
A few tips from me would be
1 Thumbs on the top of your bars
2 I would use spds (imho)pull up?/better cadence?
3 Sit slightly forwards over the nose of the saddle
4 Slow and steady is better than too fast
5 look for the easiest line anticipating loss of grip through the rear tyre,loose rocks/roots/mud etc.
6 Mentally brakedown the full climb into smaller more managable sections,this way its easier to pace yourself for each bit.
7 Maintain momentum and grip but avoid spinning or riding too fast
8 Stay on the higher part of the track/camber as its always easier to drop down if you slip on the front tyre, or loose grip at the back.
9 Concentrate on your line/breathing/ and try to avoid following other riders too closley.
10 Sit down all the way, but I do think its good to stand up and stretch your legs if you can at some point.
Bike Prep for climbing
1 Adjustable travel fork is better but not vital imho
2 Shorter stems are good
3 Any 60a dual compound tyres/2.3s I can recommend
4 wide bars are good
5 saddle position/height is critical for comfort,weighting the rear tyre and grip,slightly lower than your normal pedalling stroke is best for me,(keeping your heals slightly below the pedal axle seems to be a help.)
All imho of course,good luck on your challenge 😉