Are you the only user? Or will there be someone working in the other State at the SAME time?
If it's just you. Then I'd suggest just copying your Company.QBW file to your notebook when you travel. You can also use a free Dropbox account to Backup your file while you're traveling. (MS OneDrive or any other cloud or local USB drive, etc. will work too.) This will give you a Backup and easy access to the file if you need to load it on the other machine in the other State.
If you need to work in Multi-User mode and have the file always up-to-date in the other State, then you will want to set up the two machines. But to access it with your notebook, you'll want to use the Windows included Remote Desktop software or one of the many 3rd party options. I use AnyDesk and I have also used TeamViewer over the years and there are others. The 3rd party Apps give you a few more bells and whistles than MS Remote Desktop does.
If you don't have a 2nd Desktop back in the office and need to buy one, you do not need a full size desktop. You can get a little mini PC (e.g. Lenovo ThinkCentre M Tiny Series). You don not even need a monitor, mouse or keyboard. You can borrow the one from your other Desktop for the setup, then start accessing it Remotely from your notebook.
The Remote access is MUCH faster than trying to VPN into your other network and trying to run QBs remotely as a true 2nd machine via VPN.
