I'm trying to have my saves automatically upload to the cloud but the default save location, which took me some time to find, being in the game directory is a bit inconvenient for that.

Is it possible to change the save location in the ini file? I haven't been able to find much in regards to what possible settings can be set in there.

I don't know if this is still relevant to you, but:
From what I know there is no way to change the save_folder, but you can use a program called "GameSave Manager" to save only the actual savefiles in the cloud service of your choice (instead of the whole game folder). Sadly this program doesn't detect the gog Version of this game so you have to add the path to the save files manually.