In Arnold Ardoff's poem "Almost Ready," a youthful narrator talks about going to a birthday party as a "cool and in control young dude"--but only "as soon as" he finds the rights clothes and the "right mask."
Beneatha and this speaker are similar in that they are struggling internally with their identities. Both are paralyzed by wanting to make sure they have themselves in perfect order before they step out, be it to a party or into life.
As Asagai says to Beneatha, she wants her life to be in perfect order in just the way she has decided it should be. Chiefly, she has a strong desire to go to medical school, rather than abandon that to marry Asagai and follow him to Africa (where she could still do medical work). Likewise, the speaker in "Almost Ready" is hesitating about going to party because he doesn't have himself attired to project the perfect image. Both are at risk of missing what life has to offer because they are hesitating.
The poet's attitude toward the "dude" is tongue-in-cheek, while Hansberry takes a serious attitude toward Beneatha and her life choices. A difference between the two characters is that Beneatha's decisions do carry more weight than going to a party. More significantly, Beneatha is not trying to put on a mask but find her authentic identity. The clothing and pose of the young man in the poem is a defense against his insecurities, while Beneatha's adopting of an Afro and considering moving to Africa is an attempt to strip down her defenses and be who she really is.