Of course it's possible.
Unfortunately, you have revealed enough information for me to advise you not to start down the road. Switching from a suspension fork to a rigid fork can involve trail issues. Switching from linear pull brakes to caliper brakes can involve clearance problems. Replacing your fork, headset, stem, and brake is a lot of stuff.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.