I have a Ragley Blue pig not a million miles away from your build, a mate have a BFe
Obviously you’ve already got it, and I’m sure it is a good fork but I would suggest getting an air sprung sektor over the coil;
1. You save weight.
2. You can adjust the spring-rate easily for different conditions, weight and gear changes.
3. Travel adjusters appeal in principle, but the geo on the BFe is just fine at 140mm, its just another thing to bugger up TBH.
I’d seriously check out X-fusion’s new forks too.
In terms of the other components I can’t speak for the Mountain Kings but have just taken my new pair of Schwalbe Hans Dampfs for a spin today and am pretty impressed.
The 2.35” come up over 2.4 on nice wide rims like you are thinking of and their climbing traction was excellent in the claggy clay I was on this afternoon. Definitely worth a look IMO.
For headsets, personally I think Nuke-proof are pretty hard to beat for the money, and Cane Creek I’ve had a good experience with. I think headsets are a bit like pedals – after about £50 you stop getting any real additional performance or durability gains and it becomes more about showing off.
Whilst certainly not popular Hayes brakes last of ever, never need tweaking, even if you prang them around.
Alex