I have tried to assemble you package with Devpac on Hatari 1.6.0. First i got some error messages and i had to change some label names and to deactivate the color fade. Now i can assemble it but i get 2 bombs when starting.
I just wanted to test if your STE fullscreen mode without stabilizers still works fine with the STE hardware scrolling and screen splits. Have you already tested this?