Hasta La Motion!

First post here. I am a compositor in NYC. I will be getting some shots to work on in house (matte painting, green screen comping etc) on a medium budget feature (i’m guessing 10 million?). This work would otherwise go to a vfx house of the type that i sometimes freelance for but i know the producer and they are looking to save money. Long term i am looking to build my own small shop, so it works out great for me. Don’t have too many details about how much work is involved yet but I have no experience estimating. Can anyone give me a range per shot for this kind of work? (thinking moderately average degree of difficulty pulling keys etc. Until now i’ve only worked on a day rate for similar vfx houses, or in house on much lower budget (but equally challenging) stuff where i’m getting paid far less than it really costs. Any advice is welcome.