Need to Upgrade My Desk

Well, I am probably in the wrong section, and I apologize. I am usually the one trying to help people, but now i need some help.

So I am looking to upgrade my desk. Right now, I have a 41" desk, with a two-tier type of thing going on. Here is the exact desk I have https://www.amazon.com/gp/product/B019R40X6K/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 along with my setup I've moved, and actually have a computer room so I have a whole wall to myself now, instead of being confined
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The only reason I got it because I was moving to new apartment and just needed a desk for my laptop. Then I upgraded to two monitors with a mount and then eventually built a very nice computer. So I made it work for now, but it is just not enough space. My case is below me, and I barely have enough space for keyboard and mouse. I would like to have everything on top. I found a nice one at Conns, but they sold my desk three days after I made the purchase and headquarters cannot find out when they will come into stock. Totally 100% customer satisfaction, right?

Basically, here is what I want: a long table for a dual monitor setup with a mount/clamp (and upgrade to 3 in the future probably without the mount), be able to put everything on top, including my NZXT 340 case (it will be facing me on the right side), and a back underneath to make cable management easier.

I've been looking at the IKEA Malm series, and it isn't bad, especially with the cable management bar, but I feel like that is probably not enough. I found this one https://www.amazon.com/gp/product/B000W8I1D8/ref=as_li_ss_tl?tag=hgg2-20&ie=UTF8&linkCode=ll1&linkId=8296cbfcab22354ed69337f18ec84436 and it's pretty long, but wanted to see if I can find something under $150.

Any help is appreciate it. Thanks in advance.

 
My dad built add ons to our old computer desk, granted it looked a bit pants but he had a mid shelf for the moniter, a pull out drawer for the keyboard and mouse plus a hole for the cables to go tidily underneath
Only basic skills needed (borrow a jig saw if you haven't got one)
You could feasibly buy a suitable ikea desk, cheap off ebay, and cut a hole out of the rear to pass the cables through? Options 😛

Edit: do you have space for/would a corner unit work for you?
Loads of extra space, shelves to one side or the other, drawers, cable tidy...

My ikea desk has a lid, hole for cables, and a back board to pin files to...they don't make it any more but it's lovely, only suitable for laptops though lol