^^^^ After talking with an atty about "Trust"(s), etc. and wanting to KISS, and all the instructions, contingencies, and family dynamics (i.e. looking out for each other), ages, etc. I went (as did my parents) in a different direction .... moving away from a trust they setup decades ago. It gets complicated when your "primary" administrator croaks, etc. and I don't want to burden others, nor have non-family deal with stuff ..... that's family. The amount of $$$/property(ies) differs for each situation too... ain't easy

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I (and my parents) will "give it all", no strings attached to an absolutely responsible, TRUSTed individual and told to "take care of your mother, grandparents, family" .... this will NOT work for some, but it's YOURS .... do the right thing.
Just for consideration.... maybe consider:
Kid 1 - 0% (or mebbe a very modest amount)
Kid 2 - 50%
Kid 3 - 50%
Kids 2 & 3 are instructed to "take care of Kid 1" as life changes, curve balls that you NEVER anticipated and "time" changes every thing .... and it will

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I know my family and you know yours.... what works for me .... might not
But I'm good with it... YMMV.
It all depends .... my crystal ball is really a cube ... and cloudy too... but it's family

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Good luck!