I'm glad to hear you're taking the leap and wrangling a new dimension :) I will be doing some work on PixelCNC over the next few days to improve the post-processor functionality as a direct result of your request and v1.30a will include those improvements, plus the previous fixes/changes and the new pocketing operation I just finished. I'm aiming at the next weekend to have v1.30a out. I'm sure we'll be able to get PixelCNC going as your go-to CAM solution for toolpathing images. The next big feature I'm looking at is (ironically) supporting 3D model import, which will effectively generate a depthmap from a given 3D model from which toolpaths can then be generated. This should open up PixelCNC as an alternative workflow to many CNCers who have an existing 3D model based workflow that PixelCNC is not suited for. 2019 is going to be a big year for PixelCNC!
Keep your eye out for v1.30a, it will include a post for UCCNC - which will keep G/M command codes on separate lines. Also, I've opted to remove the image-size limitation from the free trial and instead impose a limit on operation toolpath motions, so that users can test out their high-res images.
Happy New Year!