Fair enough, now the model you provided needs a flat leading edge per the examples and other posts.
Please determine and trim your model to show where the wing stops and the tubercles begin.
It may be difficult to maintain tangencies depending on the method used.
Although I agree, this is a challenge in any such air foil.
And before I do this for you, you need to try some of the recommendations made by others.
I'd like to see how you are getting on with what you've learned from this discussion.
Forum members are here to help guide you to do what you are trying to achieve.
Often times we get inspired to flesh out a optimized solution. This is not the norm.
Therefore, please try this challenge by providing the parameters you have stated in geometry.
Trim back that leading edge; add some sketch geometry in both directions for the profile you want.
From there we can continue to move forward.
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