I think you would really like the laptop-as-desktop replacement-scenario. This past week I finally got myself in gear and purchased the 24-inch LG Thunderbolt 3 monitor at the Apple store! Actually, I had seen it at the store before and had also read reviews, so knew that this is what I wanted. Trying something new, I took advantage of the courier service, where all I did was order the item from the Apple store online, specified courier delivery to my home within two hours (an extra $9.00, and it is so, so worth it!) and actually in just over an hour the guy was at the door with the big, heavy box!
It took very little time or effort to set the thing up. I'd already cleared the computer desk and rearranged things -- desk needed tidying anyway! After carefully maneuvering the monitor out of the box and setting it on the desktop, it was simply a matter of plugging the monitor into the surge protector, and then then shutting down the computer so that I could use the provided Thunderbolt 3 cable to plug the monitor into one of the Thunderbolt 3 ports on the MBP. Fired up the MBP and voila! All I had to do then was to go to Settings and set up mirroring of the two displays. Done!
I am so glad I've finally got an external monitor, as it is making a difference when I am working with post-processing and editing images! Should've done this a long time ago. It is also nice to have more screen real estate available for other purposes, too. This is just like working on a desktop now, but offers more flexibility than an iMac does because of course if need be I can simply unplug the monitor and whisk the MBP off to another location when needed, and I've still got a display on it, of course.