Welcome to the forums!
I'd recommend using files and maybe somethign a little easier to file, but if you are up for the work, D2 will be fine. Choose a design with simple lines, it will make your work much easier. Get the blank laser cut, or you can take a stock piece of steel, mark out your design, use a drill press to make a series of holes around your design, and then "connect the dots" with a hack saw and/or Dremel type tool with rotary cutter. Then mybe use your bench grinder to clean up the profile a bit, and then the file in a draw filing motion to get it just right. Finally, drill any holes necessary for pins and such.
Once your blank is ready, use a nice sharp coarse file and file the profile! A 3-4" hunter type shoudl take a few hours and lots fo elbow grease. make sure you use a file card to clean the file every few strokes. A coarse and a fine file will get things ready for 180 or 220 grit sandpaper. Use wed/dry sandpaper backed by somethign ahrd to sand the bevel and flats of your knife. Proceed through 320 and 400 grit paper. At this point, heat treat the blade, clean it up with sand paper, and attach your handle! You'll need pin stock if you are doing it that way: go to a hobby store that sells models and stuff and you'll be able to find brass rods. There is lots of handle material you can choose from all over the place!
All a guy needs to make a knife is 2 files, sandpaper and handle materials, really. Go at it, ask questions when you get stuck, and you'll end up with a great piece.