Having just finished with the full 250 points, here is what I did. (no need to refill the flask with acid, or make extra bundles, or any duplicate work)
Get every single treasure possible (including the gold nugget on the ground by the waterfall).
Use the birdcall on the side of the mountain to talk to the Shak.
Make sure you befriend everyone and get everyone to tell you their piece of the prophecy, including the Shak.
Be honest with the Soptus Caliph when you're Pid (although you'll have to play two games for every prize).
When the Guard Captain asks you why you healed her, tell her it's to prove that shapechangers can be good.
Be sure to talk to the Queen, introduce yourself as Pid, and learn about what to do about the king. (Ignore the dialogue choices about how they did it, and rescuing the queen.)
Tell the King you have a plan.
When you first confront MacMorn, shift into bear form. (this is worth 2 points, which is most often what people are missing from their 248 point walkthrough)
Hope this helps, let me know if you need more help!