I used that desk for about 18 years. Somewhere along the way I got a hole saw and drilled holes and popped in grommets where I wanted them. It was great for a desk for working (rounded from corner), the backsplash kept stuff from falling behind it, I drilled power strips into the bottom, the surface could be cleaned for eating, and it was heat resistant for soldering. For the ends, I got two Hon filing cabinets from a used office supply store for about $25/ea. Such a great desk, with our new house I may go back to it.
Isn't this supposedly what Amazon did in their early days?
Don't buy a door. Just buy the mass-produced commodity fiberboard item made for the exact purpose. Tricks and tips are overrated.
added 4 table legs from ikea, and painted the board with wood-finish.
Here's an example: https://www.homedepot.com/p/JELD-WEN-32-in-x-80-in-Primed-Fl...
Actually two tips. First, if you want a giant desk just buy an unpainted door. Ta-da! 2m long desk for $100. Prop it up at either end with IKEA drawers.
Now, to make your cables neat. Buy a roll of Velcro, the stuff we use in data centres to neaten cables. Buy a bunch of small screws, 10mm is big enough.
Cut a piece of Velcro about 10-15cm long. Screw it, through the center, to the underside of your desk. Repeat as required.
Gather cables neatly, secure with Velcro, bask in glory.