I love this and I'm happy to say that we have almost everything you need to build this.

NUT-10 specifies what scripts in general should look like: https://github.com/cashubtc/nuts/blob/main/10.md

NUT-11 is an example of a script. You can probably copy most of it (of the code) and replace relevant parts with your DLC ECC operations instead of the schnorr signature check. That's the easiest I can think of, maybe there are better approaches.

definitely join our discord though: https://discord.gg/rTGxfneh