Considering buying a second iMac for different location

I recently upgraded my iMac, which I primarily use for running our business. I use Quickbooks for Mac, Excel, Apple Mail, etc. I travel weekly to our second home which is circa 100 miles away. To have access to my files, I airdrop my Desktop to my MacBook Pro, and then have access to everything when I'm at home #2. I've been using an external monitor with my laptop when at home #2. When I return to my primary residence, I essentially airdrop everything from my laptop back over to my iMac, and so any new work/updated files are now on my iMac.

This system has been working ok, but my laptop tends to run slower and I prefer the screen/set up on my iMac. My question is - if I were to purchase a second iMac for home #2, what process would be best for having shared/synced folders with my home #1 computer? I have tried iCloud in the past and didn't care for it, as it'd often times create 2 of the same documents, leaving me uncertain on which file was the most recent.