Not loving ............

Unless you desperately need the shelf units? Better without. Better drawer proportion below as well.

All slab fronts, or skinny shaker would take the homework, yr. 2000 look away as well. : )

^^^^I like the look of skinny/slim shaker doors/drawer fronts + they would "update" the look of the unit. I also agree with Jan's comments that the unit would look better if (i) the drawer to door ratio = the ratio shown in the image, and (ii) without the shelf units (removing them also provides more work space + open shelf towers don't provide valuable storage - the space doesn't need something filled with tchotchkes).

No shelf units, they don't add anything and take away from your work space, unless you intend to store books that you need to access continually. If not, they might be ok if you had doors on them, since the open shelves are for decorative items only. Also, I assume that you are having the unit go from wall to wall, with no spaces.

Also think about what you need to store. What are you putting in the small top drawers, pencils, pens? Do you really need 4 of them? I would want more file drawers, but that's me.

I would need to know wat kind of business and all the things to do that business . I do not like the open shelving , why shaker cabinets at all. AI is not a designer just sit down with the cabinet maker with a list of all you need on that wall, get that figured out then add knick knacks but never give up work space for shelving sitting on the work space

Is there nowhere else for this "office" ? I have a similar set-up, but it is along the hallway that leads to the master suite and far from the living areas of our open plan. I am pretty neat, but I still have a pile of my decorating stuff and a pile of post-it notes on either side of my monitor ... I write notes/measurements of things I am working on and don't purge often enough!

The easiest way to keep paperwork organized is to have file drawers. I have 4 of them with 13.25" high drawer faces.

I used to have a printer, but now use wi-fi to connect to the one in my DH's larger office.

Also make sure you have enough leg space for the chair you use, your sitting height and for crossing your legs while seated.

What flooring is under this? I noticed I was damaging my engineered wood floor with my chair wheels. Get a Vitrazza Glass chair mat. Much nicer than the plastic stuff and you can order a custom size to fit your exact space/needs. https://www.vitrazza.com/

During construction ... I blurred the view out the window!

I'm wondering about the electrical requirements - desks require loads of power, cable management and task lighting. A beautiful, custom piece can get junked up quickly.

If you don't already have a plan, consider shifting the printer over and having the carpenter install surge protected power strips with ports inside the cabinet next to the knee space so you can add devices and hide cords/cables. You'll need openings on the desktop and inside cabinets for threading cords.

Consolidate electronics. Instead of three monitors, get a large, curved monitor (with one power cord) which can still be split into different screens. You have a printer, if you need a scanner, consider a multi-function machine with one power cord.

Consolidate lighting. As others have mentioned, maximize your work surface. Your carpenter can build shelves to be mounted above the desk with built in task and display lighting on a dimmer switch. A different option is to have a separate hutch built and placed on top of the desk with lighting and skinned on the back to make it look like one piece.

If you want arms on your desk chair, make sure the pull out keyboard tray is high enough to allow the chair to scoot underneath so using the keyboard is ergonomic. Where do you plan to place your trashcan? If it's in the knee space, measure your chair and trash and adjust the opening so you aren't hitting it.

I have slender pull out writing trays above the drawers closest to my desk knee space that are used constantly during the day whether for my coffee cup or reference docs. They slide in and are flush when not in use and are easy for a carpenter to add.

It's good you have pull out trays in the cabinets. Consider asking your carpenter to use hardware so you can have more than one tray for supplies and adjust spacing. There are inserts to fit inside the file cabinet drawer for hanging folders.

I'm sure you've noticed by now I haven't answered your question about drawer to cabinet proportions. My priority is always function first, I get that figured out, then work on the style.