Iirc you can technically release as DRM free on Steam. There are some out there you can literally drag and drop to a different PC and it’ll work just fine. Just in case you wanted to go that route since you hate DRM.
I cannot promise a GOG release just yet, but I will be applying for the required publishing deal. If that goes through then yes. It would be a simultaneous release. The game is already on Itch (= DRM free version) and that too will be available on day 1 if I can help it.
Really like the art, any plans for ports to mobile? I think it could do really well there. I'll kick some cash to the Kickstarter for sure, any plans to continue if you don't reach the goal?