Joined: Nov 2004
Posts: 824
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From: parts unknown
Bikes: surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
The folks in the mechanics forum might have better answers for you. They'd probably know if the fork you need is available.
You're right about the rear brake. To convert to disc you'll have to have a tab welded to the frame near the rear dropout, which is a pretty precise bit of work and will end up requiring some repainting afterwards.