If this is what you want to do, do it. There are a lot of ways to live, and no matter which ways you choose, a lot of people will say you are wrong. I wouldn't have started on the project, but apparently you are well into it and enjoying it---so why stop now? Get a lightweight fork with the tire clearance you need .....
One thing .... look at your brake options. Right now it looks like you have cantilever brakes, which are not common any more. You might have a hard time finding another fork, particularly in CF, with cantilever posts. The Trek fork probably will (I assume) but you might be better off going with modern dual-pivot front brakes.