I'm pretty sure I agree with many, I'll leave the rear brake well alone, it still stops me and the front fork has disk mount, so stopping isnt actually a problem other than when the mud gets deep and claggy.
I am still unsure about the head tube. Yes one inch is original but its a real bitch getting forks for it, even the ti rigid fork was custom made cos I failed to track down an inch rigid fork at the length i wanted and made of something that wouldnt snap - I have a fear of alu steerers and decided to damn the budget, say no to steel and go for ti to match the frame. hmmm still cant decide. an inch and eight steerer would help if i ever decided to put gears and suspension back on... dilemma.