CPT’d Qwen9B on Polish legal data. How to make it chat? IMPORTANTLY: how to make it reason? and function call in my harness? and which to do first? [D]

TLDR: training my first general law model and unsure what to do with my data PRE-PS: it will be a replacement for opus in my current AI LAW harness, I know it will be hard but I wanna do this project and find it geniuenly fun. I’m building a Polish legal model using Qwen3.5-9B-BASE (I plan to scale up to 27b qwen4 later) . I’ve done CPT and have quite a bit of data available, but I’m getting lost about what should come next or even if I should do more CPT. My main question is how to turn this (maybe) domain-adapted Base model into an agentic+chat assistant that reasons through legal problems.