Superficial rust will be fine. I just sprayed some oil in the drainage holes in the tubes before the build and during servicing.
Just avoid spraying grease or bearings with oils, it can breakdown the protective grease.
Fork wise, for £150 check this out:
https://www.brothercycles.com/shop/accessories/kepler-disc-carbon-fork/
– Carbon blades
– Alloy crown and dropouts
– Alloy 1 1/8″ steerer
– Rake: 45mm
– Axle-crown: 400mm
– 42c clearance
– Weight: 750g
Not the cheapest or crazy expensive – my old man foo’ked one of his dropouts with a blind driver. Frame is still straight but dropout and wheel buckled.
Hopefully this makes the bike a little lighter and safer. Went the QR route so we can still use old wheels in the shed.
Couldn’t do that with a carbon frame eh?