Built-In Home Office Desk With Concealed Cable Routing

I'm looking for an experienced furniture builder or carpenter to design and construct a custom built-in desk for my home office. The desk should run along one wall, roughly 2.4 meters wide, with a floating desktop surface anchored to a full-height cabinet on one side for storage. The biggest priority is hidden cable management: I want grommet holes in the desktop for cables to drop straight down into an enclosed channel or false back panel, with a removable access panel so I can add or swap cables later without dismantling anything. Power strips and a small network switch should sit inside a ventilated compartment, not exposed on the wall or floor.

For the desktop surface, I'm considering either a solid wood slab (oak or ash) with a matte oil finish, or a durable laminate if that keeps the budget in check — open to your recommendation based on durability and cost. The desk needs to support a dual monitor arm clamp-mounted at the back edge, so the surface thickness and the mounting area must be reinforced accordingly. Underneath, I'd like at least two drawers and one cabinet with a shelf for a small printer.

Cable openings should be finished with grommets that match the desktop color, not raw holes. Please also route a channel for a headphone hook and a hidden power outlet block reachable without moving the desk. I can provide room measurements, an outlet location photo, and inspiration photos. Looking for a realistic timeline for design approval, material sourcing, building, and on-site installation, plus a materials list with a rough cost breakdown before work starts.