Yeah, you need top shelf kief for this. I don’t believe you have even 50% kief based on how you’re coming by it. So I suspect you will be disappointed by the quality of the rosin, or will need to spend some time getting from “mill dust” to “squish worthy”.
Having seen hash rosin achieved commercially (didn’t seem viable) with a hair straightener, I don’t advise throwing much at your press. Finding someone making decent rosin and paying them to tell you your kief sucks might be appropriate.
I personally would just buy a used $5 hair straightener and test it myself, but I can see the boss not buying the results (your boss, not mine).
[actually I wouldn’t I’ve got presses laying around ]