This is how I would say it: Did you see a white man about 6-feet tall wearing a black bomber jacket and a baseball cap? Sentences 1, 2 and 3 are wrong. Sentences 4 and 5 are marginal.
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park sang joon1) Can I use 6 'feet', not '6-feet', to modify 'man'?He is six feet tall.
park sang joon"in a black bomber jacket and on a baseball cap"?
I see that "a man on cap" is absurd; I think your explanation with a picture is very effective.
"in a black bomber jacket and on a baseball cap"?
Here is a man on a baseball cap: