Gear recommendations for John o' Groats to Land's End

I'm thinking about walking JOGLE next May-July. Has anyone got recommendations for main gear on a £1200ish budget?

I'm hoping to do 15-20 miles a day, mostly wild camping and getting a hotel/b&b every 2-3 days. I'm also on the taller side so I was thinking of getting a mat and bag with long versions.

So far I was thinking: -Durston x mid 1p (normal or solid) -Jetboil Minimo, -Alpkit Ultra 120-3 season 1°C limit -Thermarest neoair xlite NXT -Rucksack- no clue maybe 60-70l as long as its relatively light and comfy

Any advice on tried and tested gear or from anyone that's done LEJOG/JOGLE is much appreciated. Cheers